You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I help you today?

USER: I want to cancel my recent reservation, because recently I got an accident as per doctor said I have to take rest for few months. will you help me?

ASSISTANT: Sure, can I have your name please?

USER: My name is Kevin Collins.

ASSISTANT: ok, please wait.

USER: Sure.

ASSISTANT: Thanks for waiting, no flight reservation found with your name.

USER: No problem, thank you.

ASSISTANT: Thank you for opting us.