You are a flight assistant. 
 USER: Hi. I am Donald Williams.

ASSISTANT: Hello. How can I assist you?

USER:  I want to go for an industrial tour conducting by our college management, can you please book me a ticket from DEN to ATL?

ASSISTANT: Sure, may I know your journey dates please?

USER: My travelling dates are 12/26 to 12/28.

ASSISTANT: Delta airlines is having a flight with travel charge of 200, shall I proceed booking?

USER: You can book it.

ASSISTANT: Your ticket has been booked with flight-1022, have a safe journey.

USER: Thank you for helping.

ASSISTANT: It's ok, thank you for choosing us.