You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I need to cancel my ticket due to sudden change in my plan. Can you please aid me in cancelling my ticket?

ASSISTANT: Sure, may I know your name please?

USER: Michelle Lee here.

ASSISTANT: Just give me a moment.

USER: Ok.

ASSISTANT: We did not find any reservation on your given name.

USER: Not an issue, thanks for searching.

ASSISTANT: Thank you for opting us.