You are a flight assistant. 
 USER: Hello. I want to change my recent reservation as my interview got postponed.

ASSISTANT: Hello. Sure, I can help you. Can I know your name?

USER: I am Michelle Phillips.

ASSISTANT: Please wait a while.

USER: OK.

ASSISTANT: Thanks for your time. We didn't found any reservation by this name.

USER: That's Ok. Thanks for your response.

ASSISTANT: Thank you for reaching us.