You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I need to cancel my reservation, can you please help me?

ASSISTANT: Ok, can you please provide me your name so, I can check with your previous booking?

USER: Sure, I am Ruth Martin.

ASSISTANT: Ok, please hold on for a moment till I check with your existing reservation status.

USER: Ok.

ASSISTANT: Ruth Martin, I'm sorry to inform you that there is no reservation by your name.

USER: Ok, no problem.

ASSISTANT: Thank you for choosing us, and sorry for the inconvenience.

USER: Thank you.