You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to change my reservation as my plan to attend meeting at St.Paul is postponed. Can you change my reservation?

ASSISTANT: Sure, we are here to help you. May I know your name?

USER: My name is Stephanie Scott.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry to say, no reservation found with your name.

USER: Thank you for the details.

ASSISTANT: Thanks for reaching us.