You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is John Davis.

ASSISTANT: How may I assist you at this moment?

USER: Can you please help me in cancelling my recent reservation?

ASSISTANT: Sure, I am glad to help you. Please wait a moment to check your previous reservation.

USER: Ok, take your time.

ASSISTANT: We regret that, there is no reservation found with your name in our records.

USER: That's ok, thank you.

ASSISTANT: Thank you for approaching us, have a great day.