You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: Patricia Walker here. I would like to cancel my recent reservation, can you help me?

ASSISTANT: Sure, Please wait a second.

USER: Sure.

ASSISTANT: We have found a reservation on your name, Shall I cancel it?

USER: Yes, cancel it.

ASSISTANT: Your ticket has been cancelled.

USER: Thanks for your help.

ASSISTANT: Thank you for opting us.