You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Sharon Clark.

ASSISTANT: How can I help you?

USER: I want to cancel my recent reservation, please help me out.

ASSISTANT: Sure, please wait.

USER: Ok, take your time.

ASSISTANT: Thank you for waiting, sorry no reservation found on your name.

USER: That's fine., thanks for the help.

ASSISTANT: Thank you, have a nice day.