You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you help me to book a flight ticket from DCA to SEA?

ASSISTANT: Sure, I am here to help you. Can you please let me know your travelling dates?

USER: I will start on Dec, 11 and return on Dec, 13.

ASSISTANT: Do you prefer any stopover in between journey?

USER: Yes, I need a stopover.

ASSISTANT: Are there any other specifications for you?

USER: No, thank you.

ASSISTANT: May I know your good name?

USER: Sharon Lopez here.

ASSISTANT: American Airlines is providing connecting flight with the ticket fare of 200 and depart time is 17:00 hours, arrival time is 20:00 hours. Shall I proceed?

USER: Please proceed.

ASSISTANT: Ok, your ticket is reserved in an economy class and the flight number is 1020.

USER: Thank you.

ASSISTANT: Thank you for availing us.