You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER:  Can you please book a flight ticket from DCA to IAD?

ASSISTANT: Sure, I will help you. Can you please share me your travelling dates?

USER: Yes, my travelling dates are June 23 and June 25.

ASSISTANT: Ok, please share me your name.

USER: My name is Dorothy King.

ASSISTANT: Ok, do you have any connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: Is there any other specifications?

USER: I want a ticket in economy class.

ASSISTANT: Here, I found a flight for you with single connection and class is economy. Shall I proceed for booking?

USER: Yes, please.

ASSISTANT: Your ticket is booked with flight number 1010 and airline is Delta.

USER: Thank you for the help.

ASSISTANT: Welcome, have a safe flight.