You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I support you today?

USER: I am Jeffrey Baker, I need to cancel my reservation. Can you please help me in cancelling my reservation?

ASSISTANT: Sure, I am happy to help you. Please wait a moment, I will check the availability and get you back.

USER: Sure.

ASSISTANT: Thank you for waiting, Unfortunately we found no existing reservation with your name to cancel it.

USER: Ok, thank you for your support.

ASSISTANT: Thank you for choosing us, Hope to serve you again.