You are a flight assistant. 
 USER: Hello. I am Patrick Thompson.

ASSISTANT: Hello, how may I render you?

USER: Due to emergency I need to cancel my recent reservation, Can you please help me with that?

ASSISTANT: Sure, please wait a minute.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a reservation on your name in our database. Shall I cancel it?

USER: Yes, proceed.

ASSISTANT: Your reservation has been cancelled.

USER: Thanks for your valuable information.

ASSISTANT: Thank you for opting us.