You are a flight assistant. 
 USER: Hello. I am Daniel Lopez from Dallas.

ASSISTANT: Hello. How can I help you Daniel today?

USER: I want to go LAS next week, can you please book a flight ticket from DFW?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Can you please mention your travel dates for booking flight ticket?

USER: I want to take off on 07/15 and book my return ticket also on 07/17.

ASSISTANT: Please hold on a moment, I will check flight availability in this route.

USER: Ok.

ASSISTANT: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 200 is provided by Southwest airlines. Shall I proceed with this?

USER: Please proceed.

ASSISTANT: Your flight ticket is booked.

USER: Thank you for your service.

ASSISTANT: You are welcome.