You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I aid you today?

USER: Please book a ticket from Las Vegas, NV-LAS to Washington DC-IAD.

ASSISTANT: Sure, I am mirthful to help you out. Please provide me your trip dates.

USER: Travelling dates are from 07/15 to 07/17.

ASSISTANT: May I know your name to proceed further?

USER: My name is Margaret Jackson.

ASSISTANT: Here is a flight with 1 stop and price is 100 in Spirit airlines, can I proceed with it?

USER: Please book a ticket.

ASSISTANT: Your ticket has been booked with 1021 flight on Margaret Jackson.

USER: Thanks.

ASSISTANT: Thank you for reaching us.