You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you today?

USER: Unfortunately my trip was cancelled, due to some financial issues in my family, so I decided to cancel my reservation. Can you assist me in cancelling my ticket?

ASSISTANT: Sure, can I have your name so that I will check the reservation?

USER: Yes, my name is Ryan Rodriguez.

ASSISTANT: Sorry Ryan, no reservation found on your name, I think your previous  reservation is not confirmed before.

USER: Yes, it might be the reason. Anyways, thank you.

ASSISTANT: Do you need any other help?

USER: No, thank you.

ASSISTANT: Ok, thank you for contacting us .

USER: You are welcome.