You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

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

ASSISTANT: Sure, wait a minute.

USER: Ok, take your time.

ASSISTANT: Thanks for waiting, we could not find any reservation on your name.

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

ASSISTANT: Thank you for availing us.