You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER:  I am Scott Lewis want to cancel my reservation due to cvhange in my trip dates with my family. Can you help me in cancelling?

ASSISTANT: Sure, may I know your name?

USER: I am Scott Lewis .

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: There is no reservation found on your name.

USER: Thank you.

ASSISTANT: Thank you.