You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Angela Parker.

ASSISTANT: How can I assist you?

USER: As my meeting got cancelled at Dallas, can you please help me by cancelling my recent reservation to Dallas?

ASSISTANT: Sure, I'll help you in that. Please be on hold.

USER: Thank you.

ASSISTANT: Parker, there is no reservation found under your name to do cancellation.

USER: Ok, not an issue. May be my brother has already cancelled my reservation on behalf of me.

ASSISTANT: Yes, may be.

USER: Thank you for providing information.

ASSISTANT: Thank you for choosing us.