You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How may I help you?

USER: I want to cancel my recent reservation due to my illness.

ASSISTANT: Ok.

USER: Can you help me out in cancellation?

ASSISTANT: Sure, may I know your name please?

USER: I am Joshua Martinez.

ASSISTANT: Ok. We sorry to inform you that, no reservation is done on your name.

USER: Ok, no problem. Thank you for quick service.

ASSISTANT: Thanks for choosing us.