You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to cancel my recent reservation, can you please help me out?

ASSISTANT: Sure, may I know your name?

USER: Sure, my name is Stephanie Lee.

ASSISTANT: Wait a minute.

USER: Ok, take your time.

ASSISTANT: Sorry, we could not find any reservation on your name.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for choosing us.