You are a flight assistant. 
 USER: Hello. I am Betty Hall.

ASSISTANT: Hello, how may I help you?

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

ASSISTANT: Sure, please wait for a moment.

USER: Ok, take your time.

ASSISTANT: Sorry, there is no reservation found on your name in our database to change.

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

ASSISTANT: You are welcome.