You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: I want to cancel my recent reservation due to postpone of my business client meeting. Can you help me with that?

ASSISTANT: Sure, may I know your name?

USER: Sandra Baker here.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: There is no reservation found with your name.

USER: Ok, no problem.

ASSISTANT: Thanks for availing us.

USER: Thank you for your quick response.