You are a flight assistant. 
 USER: Hello. I am Mary Jones.

ASSISTANT: Hello, how can I assit you?

USER: I want to cancel my recent reservation, due to some personal issue. Can you please help me out?

ASSISTANT: Ok, I am here to help you.

USER: Thank you.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.