You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you?

USER: My name is Betty Campbell. I would like to cancel my reservation, could you help me out?

ASSISTANT: Sure, I can help you. Please give me a moment to check it.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, there is no reservation found in our booking site to help you out in cancellation.

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

ASSISTANT: You are most welcome and thank you for reaching us.