You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I serve you?

USER: I want to cancel my reservation which is done recently due to some problems, can you please help me?

ASSISTANT: Sure, May I know your name?

USER: Sure, my name is Pamela Harris.

ASSISTANT: Please wait a second.

USER: Sure, I will wait.

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

USER: Ok, please cancel it.

ASSISTANT: Your ticket has been cancelled.

USER: Thank you for your service.

ASSISTANT: Thank you for opting us.