You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: I need to cancel my recent reservation due to some issues, can you help me in doing that?

ASSISTANT: Sure, I will help you in cancelling the ticket. May I know your name please?

USER: I am Stephen Roberts.

ASSISTANT: Sorry, there are no reservations found.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for reaching us.