You are a flight assistant. 
 USER: Hi, I am Cynthia Lee.

ASSISTANT: Hello, how may I help you?

USER: Can you please book a flight ticket on dates 07/01 and 07/03?

ASSISTANT: Sure, I am here to help you. May I know your source and destination airport codes?

USER: My airport codes are DEN and DFW.

ASSISTANT: Ok, please let me know your specifications.

USER: I want to return at afternoon.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: Happy to tell you, there is a flight available as per your requirements in AA airlines and the ticket fare is 600 only in business class. Can I book the ticket for you?

USER: Yes, please.

ASSISTANT: Your ticket is booked with the flight-1005. Flight departure time is at 2:00AM and arrival time is at 16:00PM.

USER: Thank you for the help.

ASSISTANT: You are welcome and have a nice day.