You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Owing to an emergency, I just want to cancel my recent reservation. Can you please help me?

ASSISTANT: Sure, I will help you with cancellation.

USER: Thank you.

ASSISTANT: May I know your good name?

USER: Steven Collins is my name.

ASSISTANT: Please wait for a moment, while I check for the reservation.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry there is no reservation found on your name in our system data.

USER: Ok, thanks for your service.

ASSISTANT: Thank you for visiting us, we hope see you again.