You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

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

ASSISTANT: Sure, I am here to help you.

USER: Thank you for your response.

ASSISTANT: May I know your name to check your reservation status?

USER: Sure, my name is Sandra Green.

ASSISTANT: Ok, please give me a moment.

USER: Ok.

ASSISTANT: We found an active reservation on your, would you like me to cancel that reservation?

USER: Please proceed.

ASSISTANT: Ok, your reservation has been successfully cancelled.

USER: Thank you for your service.