You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Owing to an emergency I want to cancel my recent reservation. Can you help me?

ASSISTANT: Sure, could you please provide me your name?

USER: OK, my name is Jonathan Hernandez.

ASSISTANT: Please wait a moment.

USER: OK.

ASSISTANT: Thanks for waiting, I am sorry, there is no reservation on your name.

USER: OK, thanks for your service.

ASSISTANT: Thanks for choosing us, have a nice day.