You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, could you please tell us for what help you approached us?

USER: I want to cancel my recent reservation. Can you please help me with this?

ASSISTANT: Ok, could I have your name please?

USER: Benjamin Harris here.

ASSISTANT: Ok, please allow me a moment.

USER: Sure.

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

USER: Ok, not an issue. Thank you for checking.

ASSISTANT:  You are welcome, have a great day.