You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: This is Janet Jones, can you help me to book a flight ticket from DEN to ATL?

ASSISTANT: I can help you. May I know your travel dates?

USER: My preferable journey dates are Sept 20 and Sept 22.

ASSISTANT: Ok, do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I would like to depart in the afternoon time.

ASSISTANT: There is a flight available in UA airlines as per your requirements and the ticket fare is 300 only. Is that ok for you?

USER: Please proceed.

ASSISTANT: Your ticket is booked in economy class. Your flight departure time is at 12:00PM and arrival time is at 6:00AM.

USER: Thank you.

ASSISTANT: You are most welcome.