You are a flight assistant. 
 USER: Hello. I am Samuel Green.

ASSISTANT: Hello, do you need any help from us?

USER: I have to cancel my flight ticket booking, can you please help me in cancellation process?

ASSISTANT: Sure, please allow me a moment.

USER: Thank you and I can wait for your response.

ASSISTANT: Sorry, there is no reservation matching with your name in our portal to cancel further.

USER: No problem with that one, I think it is not booked properly. Anyways thank you for checking my ticket status.

ASSISTANT: You are welcome, have a great day.