You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Christopher Allen here.

ASSISTANT: How can I assist you today?

USER: I have to cancel my reservation which I have done earlier to participate in dance program 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. Will you please give me a moment?

USER: Thank you for receiving my request, take your time to check.

ASSISTANT: Thanks for waiting, there is no reservation found under your name.

USER: Oh! I think the ticket was not booked due to server issue. Anyway, thank you for the information.

ASSISTANT: Welcome, have a great day.

USER: Welcome.