You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I oblige you?

USER: Please cancel my ticket which is with the name Lisa Johnson.

ASSISTANT: Sure, Please wait for a while.

USER: Ok.

ASSISTANT: Thanks for your patience. We found a reservation on your name. Shall I cancel it?

USER: Yes, please.

ASSISTANT: Your reservation has been cancelled.

USER: Fine, thanks for the help.

ASSISTANT: Thank you for opting our service.