You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I need to cancel my existing reservation, which is done recently. Can you please help me out?

ASSISTANT: Sure, we are here to help you.

USER: Thank you for considering my request.

ASSISTANT: May I know your name please?

USER: Myself Melissa Adams.

ASSISTANT: Ok, please be on hold.

USER: Sure, I will wait for your response.

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

USER: Not an issue, anyway thank you for the information.

ASSISTANT: Ok, no issue. Thank you.

USER: Thank you for your service.