This person is listening to the commitment. If the customer isn’t listening, there won’t be a commitment.
This is the person who makes the promise. This is usually done by speaking, but tokens of promise can also be used. I could, for example, nod my head “yes” in order to indicate, I will do this.
Conditions for Satisfaction
This is the what is available when the promise is fulfilled. The conditions are often described using nouns or adjectives. (Verbs, adverbs, and other ambiguous terms can make promises seem ambiguous. For example, “Big Mac” is a name for two all-beef patties with special sauce, lettuce and cheese, pickles, onions, and a sesame seed bun. Did you spot any verbs or adjectivs?
Completion Time
This is the time at which the performer says the conditions of satisfaction will be met. The term “due date” can be misleading in that it expresses the promised completion time. Due dates are often set without regard to when something will be made available.
Future Action
We can always do more to fulfill our promises.

We assess reliability. These are the five most commonly accepted characteristics.

Competence to Perform
You have the skills and the wherewithal to fulfill the promise.
Estimate of Effort
You have made a concentrated effort to achieve the conditions of satisfaction.
Allocation of Capacity
You have given yourself the time to concentrate your efforts.
In spite of the fact that you don’t know what the future holds, you are willing to do whatever it takes to keep the promise. You must keep your promise and clean up the mess if you fail.
You are not having a private, unspoken conversation that is contrary to the promise you are making.

Sull and Spinosa seem to be right about their claims. They didn’t tell you what to pay attention in promising conversations. These 5 elements and 5 characteristics can help you bring reliability to your project situations.