You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: Due to some financial issues, I have cancelled my trip. So, can you please help me in cancel my past ticket?

ASSISTANT: Sure, I am happy to help you. May I know your name?

USER: Thank you. My name is Andrew Jones.

ASSISTANT: Sorry to say that, there is no reservation found on your name.

USER: It's ok, thank you for checking my past ticket.

ASSISTANT: Thank you for approaching us.

USER: You are welcome.