You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

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

ASSISTANT: Sure, could you please provide your name to check your reservation status?

USER: Sure, my name is Jack Scott.

ASSISTANT: Ok, I found a reservation on your name in my database and cancelled it successfully.

USER: Ok, thank you for cancelling my ticket.

ASSISTANT: Thank you for choosing us, have a nice day.