You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Due to some problems my trip was cancelled so can you please cancel my flight ticket?

ASSISTANT: Sure, may I know your name?

USER: Thank you for your response, my name is Rachel Rodriguez.

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

USER: Please cancel.

ASSISTANT: Your reservation has been cancelled successfully.

USER: Thank you for your help.

ASSISTANT: Thank you.