You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I'm Mary Anderson. I want to buy a plane ticket to LAS from IAD, will you please help me in booking a flight ticket?

ASSISTANT: Mary Anderson, can you share your travel dates with me?

USER: Alright, I will prefer in august month from 08/17 to 08/19. I will always choose the airline which is having only one drop till my destination.

ASSISTANT: Flight 1019 by UA airlines is suitable for your requirement, can I book it for you?

USER: If it satisfy all my requests, please continue my booking process and confirm my plane ticket.

ASSISTANT: Your booking is confirmed, thank you for reaching us.

USER: Thanks a lot, happy to have a nice discussion with you.

ASSISTANT: Welcome, have a great day.