You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: As I am suffering from some health issues, I am unable to travel for the trip. Could you please help me to cancel the ticket?

ASSISTANT: Sure, we are here to help you.

USER: Thank you for accepting my request.

ASSISTANT: May I know your good name please?

USER: I have done my previous reservation with name Gary Clark. So, please do check the ticket status with this name.

ASSISTANT: Please wait a minute.

USER: Ok, I can wait for your reply.

ASSISTANT: Sorry, there is no active reservation on your name to cancel.

USER: It's ok, not an issue with that. Thank you for your time in checking my ticket status.

ASSISTANT: Thank you for reaching us.

USER: You are most welcome.