You are a flight assistant. 
 USER: Hello.

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

USER: I need to cancel my ticket due to client meeting in my office, please help me in cancel my reservation.

ASSISTANT: Sure, could I have your name please?

USER: Am Timothy Rodriguez.

ASSISTANT: Ok, please allow me a moment.

USER: Ok, take your own time.

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

USER: No problem, Thank you for searching.

ASSISTANT: You are welcome, have a great day.