You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I'm Kathleen Young. I had planned to go on a trip, but it was postponed.Can you change my recent reservation?

ASSISTANT: Sure Young, wait a moment.

USER: Ok, take your time.

ASSISTANT: Young unfortunately, there is no reservation found for you.

USER: That's Ok. Anyways thank you for your help.

ASSISTANT: Welcome, have a nice day.