You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, welcome to flight booking agency. How may I help you?

USER: Actually, my interview has been postponed, can you please help me to cancel my recently done reservation?

ASSISTANT: Sure, we provide cancellation services also. May I know your name to check the existing reservation details?

USER: Sure, my name is James Williams here.

ASSISTANT: James, there is no reservation found under your name.

USER: That's fine. Thank you for your information.

ASSISTANT: Thank you for choosing us.