You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to cancel my recent reservation because of some personal work. Can you please help me out?

ASSISTANT: Ok, please help me with your name so that I can the status of your reservation.

USER: Sure, my name is William Thompson.

ASSISTANT: William, I couldn't find any reservation with your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for contacting us.