You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: I am Frank Clark.

ASSISTANT: Nice meeting you Frank.

USER: I want to cancel my reservation, can you help me?

ASSISTANT: Sure, I will help you.

USER: Thanks.

ASSISTANT: Please wait a moment to check your previous reservation.

USER: Ok.

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

USER: That's ok. Thank you for your help.

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