You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Mark Taylor.

ASSISTANT: How may I aid you today?

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

ASSISTANT: Sure, I'll help you in cancellation.

USER: Thank you.

ASSISTANT: Please wait a moment I will check the reservation list.

USER: Sure.

ASSISTANT: Thank you for waiting, we didn't found any reservation by this name.

USER: Not a problem, thank you.

ASSISTANT: Thank you or approaching us.