You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Stephen Anderson, want to travel from ATL to DEN. Please help me.

ASSISTANT: Sure, can I know the travel dates please?

USER: My travel dates are from 08/18 to 08/20.

ASSISTANT: Ok, wait a moment please. There is a flight in Delta airline with price 100, can I book it?

USER: Please proceed.

ASSISTANT: Your ticket has been booked with flight number 1026. Thank you for approaching us.

USER: Welcome.