You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Can you help me to cancel my reservation?

ASSISTANT: Sure, I can help you with that one. Can I know your previous booking name for checking purpose?

USER: Sure, my name is Timothy Thompson. Please check details under my name.

ASSISTANT: Please give me a moment to check it and I will get back to you.

USER: Sure.

ASSISTANT: Thank you for your patience, there is no reservation found for the user name in our back end to cancel your ticket booking.

USER: No issues, thank you for your time.

ASSISTANT: You are most welcome.