You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how best I can serve you at this moment?

USER: I am Ronald Campbell. I have visit Las Vegas LAS to meet my grand father. Can you find a flight ticket for me?

ASSISTANT: Sure, can you please mention your journey dates?

USER: Sure, my itinerary dates are on Feb 07 and return on Feb 09.

ASSISTANT: Kindly assign your boarding airport code?

USER: Ok, I want to start my journey from IAD.

ASSISTANT: Do you prefer any class in your journey?

USER: Please search a flight which is return in the morning time.

ASSISTANT: Can you please mention your connection limit?

USER: Yes, I need a single connecting flight.

ASSISTANT: Is there any more specifications?

USER: No, I don't have any other specifications.

ASSISTANT: We found a Southwest airlines, flight number 1001, price is 200 in economy class, and your return time is 9:00 AM. Shall I proceed?

USER: Ok, you can proceed with the ticket booking.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.