You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER:  I have to cancel my reservation which I have done earlier to participate in dance programme but unfortunately I have stay back here to take care of my injured friend. Can you please help me out with cancelling of my reservation?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Can I know your name to check your previous reservation?

USER: My name is Benjamin Phillips.

ASSISTANT: Please hold on a moment.

USER: Sure.

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

USER: Ok, no problem with that one. Thank you for your service and information.

ASSISTANT: Thank you for reaching us, have a great day.

USER: Welcome.