You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you today?

USER: I am Samantha Allen planning to have a round trip from IAD, can you help me to book a flight ticket?

ASSISTANT: Ok, please mention your travel dates for further process.

USER: Sure, my travelling dates will be 08/20 and 08/22.

ASSISTANT: Ok, wait for a minute please.

USER: Ok.

ASSISTANT: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 100 with flight number 1002. Shall I proceed with this flight?

USER: Ok, proceed with my booking.

ASSISTANT: Allen, your ticket is booked.

USER: Thank you.

ASSISTANT: Thank you for choosing us.