You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I  help you?

USER: I am planning to book a flight from LAS to reach Washington, so please assist me in booking a flight.

ASSISTANT: Sure, may I know your travelling dates please?

USER: My scheduled dates are on Jan 13th to 15th.

ASSISTANT: Do you have any other specifications?

USER: I need a flight in normal-cost airline.

ASSISTANT: May I know your destination airport code please?

USER: My landing airport code is IAD.

ASSISTANT: What about your connection limit and departure and return timings please?

USER: I need a connecting flight.

ASSISTANT: Departure and return timings please?

USER: I don't have any preference in that.

ASSISTANT: Ok, just a moment please.

USER: Sure.

ASSISTANT: Do you have any class preferences?

USER: No.

ASSISTANT: There is a flight with single connection in united airlines and it's a business class, can I  proceed for booking?

USER: Ok, please proceed.

ASSISTANT: On which name can I  proceed for booking?

USER: Please book the ticket on the name of Amy Johnson.

ASSISTANT: Your booking is done in 1018 flight.

USER: Thank you.

ASSISTANT: Thank you for choosing us.