You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you now?

USER: Actually I have planned for the trip but I have my final examination. So, now I decided to cancel the ticket. Will you please help me?

ASSISTANT: Sure, I am happy to help you with that.

USER: Thank you for accepting my request.

ASSISTANT: Can I have your name please to check your reservation status?

USER: My name is Helen Young.

ASSISTANT: Ok Helen Young, please wait a moment. Sorry Helen Young, no reservation has found under your name to cancel.

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

ASSISTANT: Thank you for choosing us, have a good day.