You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I serve you?

USER: Please help me to book a flight ticket from IAD to LAX.

ASSISTANT: Sure, we are glad to help you. Please let me know your travelling dates.

USER: My journey dates are from Aug, 18 to Aug, 20.

ASSISTANT: Do you have any stopover in between journey?

USER: I need  a single connecting flight.

ASSISTANT: Is there any other specifications for you?

USER: I prefer to depart in the afternoon.

ASSISTANT: May I know your good name?

USER: Barbara Carter.

ASSISTANT: Frontier Airlines is providing connecting flight with the ticket fare of 100 and depart time is 13:00 hours, arrival time is 10:00 hours. Shall I proceed?

USER: Please proceed.

ASSISTANT: Ok, your ticket is reserved in an economy class and the flight number is 1002.

USER: Thank you.

ASSISTANT: Thank you for availing us.