You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Michael Brown. I am planning to book a ticket from LAS to IAD. Can you please help me out?

ASSISTANT: Sure, can you share your journey dates?

USER: I am planning to travel on Mar 24 and return back on Mar 26.

ASSISTANT: Do you have any preferences?

USER: Yes, I am looking for a connecting flight.

ASSISTANT: There is a connecting flight with number 1027 in airline Southwest, the fare is 100 in economy class. Can I book it?

USER: That's fine, please proceed the booking.

ASSISTANT: Your ticket is reserved.

USER: Thank you for your service.

ASSISTANT: Thank you for opting us.