You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you for today?

USER: I want to cancel my reservation which is done recently due to some health issues, can you please help me?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Can you please provide your name to check the reservation status under your name?

USER: Sure, my name is John Carter.

ASSISTANT: Sorry to say this John, there are no active reservations under your name to cancel.

USER: Ok, no problem. Anyways, thank you for your service.

ASSISTANT: You are most welcome, thank you for choosing our service.