You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please help me in booking a flight ticket from LAS to DCA?

ASSISTANT: Sure, may I know your planned travel dates?

USER: I would like to fly on May 28 and return on May 30.

ASSISTANT: Do you have any limits on number of connections?

USER: I need a single connection.

ASSISTANT: May I know your name for the booking process?

USER: Myself Sarah Johnson.

ASSISTANT: Do you have any another specifications on your journey?

USER: No.

ASSISTANT: United Airlines providing a flight with the price 200 with single connection. Can I proceed for the booking?

USER: You can proceed to booking.

ASSISTANT: Your flight ticket reservation done with the flight number 1017.

USER: Thank you.

ASSISTANT: Welcome, thank you for reaching us.