You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I need to book a flight ticket from LAS to IAD.

ASSISTANT: Sure, please provide me your travel dates.

USER: Sure, my scheduled dates are Jan 29 and Jan 31.

ASSISTANT: Ok, may I know your name?

USER: Sure, Robert Moore here.

ASSISTANT: Do you have any preferences?

USER: I need a connected flight.

ASSISTANT: There is a flight available in Delta airlines and the ticket fare is 200 only in economy class. Can I book the ticket for you?

USER: Yes, you can.

ASSISTANT: Your ticket is booked successfully as per your requirements with the flight-1003.

USER: Thank you for your assistance.

ASSISTANT: You are welcome and thank you for choosing us.