You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you?

USER: I'm Justin Williams. I was fallen sick due to bad weather here in my area. So I would like to cancel my current reservation. Could you please help me with that?

ASSISTANT: Oh! that's sad, let me check with your previous booking.

USER: Sure.

ASSISTANT: Sorry to inform you, but no reservation was found under your name.

USER: That's ok, no issues. Anyways, thank you for the information.

ASSISTANT: Thank you for using our services, keep connecting with us for further also.

USER: Sure.

ASSISTANT: Have a great day.