You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Brandon Perez here. Due to sudden health issue, I am unable to move in a flight, so could you please help me out with cancelling of my reservation?

ASSISTANT: Yes, I will help you with that.

USER: Thanks.

ASSISTANT: Give me a second,I will check for your reservation.

USER: Sure.

ASSISTANT: Sorry to inform you that there is no reservation found on your name in our database.

USER: It's ok, no problem,  may be I am not booked my ticket properly at that time.

ASSISTANT: Do you want any other service from our side?

USER: No thanks. Thank you for your information.

ASSISTANT: Thank you for approaching us. Happy to serve you anytime.