You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Jason Wilson here. 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.

ASSISTANT: Please wait a while.

USER: Ok.

ASSISTANT: There is no reservation on your name in our database.

USER: That's ok, thank you for your help.

ASSISTANT: Thanks for opting us.