You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: I am Kimberly Gonzalez, I want to change my reservation as my plan to visit my friend is postponed. Can you help me with that?

ASSISTANT: Sure, I am here to assist you. Thanks for your time, we did not find your name in the reservation list to change.

USER: Ok, thank you for the information.

ASSISTANT: Thanks for reaching us.