You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you for today?

USER: Can you help me to book a flight ticket from LAS to DFW?

ASSISTANT: I am here to help you about that. Can you please provide your planned dates of journey?

USER: I want to fly on 10 Sep and return on 12 Sep.

ASSISTANT: Can you please provide the name on which you would like book it?

USER: I am Stephen Perez.

ASSISTANT: Would you like to have a connecting flight or a direct flight for this trip?

USER: I would like to prefer connecting flight.

ASSISTANT: Do you have any other requirements for your journey to met with?

USER: No.

ASSISTANT: Stephan Perez, there is a connecting flight by Delta airlines having a ticket fare of 200 which departures in the evening. Would you like me to book this flight for your journey?

USER: Please proceed.

ASSISTANT: I have booked your flight ticket with the flight 1012 in an economy class successfully.

USER: Thanks for helping me.

ASSISTANT: You are welcome, thank you for reaching us. Have a safe journey.