You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Carolyn Anderson.

ASSISTANT: How can I help you today?

USER: I would like to chnage my recent reservation because my trip dates are postponed, can you help me?

ASSISTANT: Sure, I am gleeful to help you with that.

USER: Thank you.

ASSISTANT: Please wait a moment.

USER: Sure, take your own time.

ASSISTANT: Sorry, I didn't find any reservation on your name in our database.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us, have a nice day.