You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Please help me out in cancelling my recent reserved ticket?

ASSISTANT: Sure, may I know your name?

USER: Charles Martin is my name.

ASSISTANT: Please wait for a moment to check your details.

USER: OK.

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

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us.