You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I give assistance to you?

USER: I am Kimberly Hill, I want to change my reservation as my plan to meet my friend is postponed. Can you change my reservation?

ASSISTANT: Sure, hold on a minute.

USER: Sure.

ASSISTANT: There is no reservation on your name in our database.

USER: Ok, thank you for the information.

ASSISTANT: Thank you.