You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I am Karen Perez.

ASSISTANT: Yes, Karen.

USER: I am a basket ball player, my match was canceled so can you help in cancel my reservation?

ASSISTANT: Sure. Wait a moment I will check it out whether your reservation existed or not. Sorry Karen, there is no reservation found under your name. Do you want any other reservation?

USER: That's ok.

ASSISTANT: Thank you for contacting us.

USER: Thank you.