You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Shirley White here.

ASSISTANT: How may I help you?

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: Please wait for a moment.

USER: Ok, take your time.

ASSISTANT: Sorry, there is no reservation found basis on your details.

USER: Oh! I think the ticket was not booked properly while I am booking. Anyway, thank you for the information.

ASSISTANT: Most welcome.