You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I am Dennis Collins. I am planning for a round trip, could you please help me with booking a flight ticket from DFW?

ASSISTANT: Sure, may I know your planned travel dates?

USER: I would like to depart on July 27th and arrival on July 29th.

ASSISTANT: Do you need a halt in between your journey?

USER: Yes, I am looking for a connecting flight. And make sure that my depart time is afternoon.

ASSISTANT: Sure, do you prefer business class or an economy class?

USER: I am comfortable with any class.

ASSISTANT: Please wait for a moment.

USER: Sure, take your time.

ASSISTANT: We found an airline: Southwest, flight number: 1012 and price is 200 with one connection.

USER: Ok, please confirm the booking.

ASSISTANT: Your flight ticket has been confirmed in economy class.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Thank you for reaching us.