You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I guide you for 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.

ASSISTANT: Can I have your name to check whether your reservation is existed or not?

USER: Angela Jackson here.

ASSISTANT: Sorry, there is no reservation found under your name.

USER: That's ok, no issues.

ASSISTANT: Thank you for contacting us.

USER: Most welcome.