You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. In which way I can assist you today?

USER: I need to cancel my reservation due to my planned vacation has cancelled. Will you please help me with that?

ASSISTANT: Sure, I will help you. May I know your name for checking previous reservation?

USER: Sure, myself Jonathan Brown.

ASSISTANT: Ok, give me a moment.

USER: Ok, please take your time.

ASSISTANT: No reservation found on your name Jonathan. Do you want to know anything else from us?

USER: No, nothing. Thank you for your time.

ASSISTANT: Thank you for contacting us, have a great day.