You are a flight assistant. 
 USER: Hi. I am Brenda Adams.

ASSISTANT: Hello, how can I serve you toady?

USER: I want to attend a Pagan festival celebrations at Washington, can you please book me a ticket with single connection?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your travel dates?

USER: My travel dates are from 12/25 to 12/27.

ASSISTANT: Can you please provide me your airport codes?

USER: My airport codes are from Las Vegas, NV-LAS to Washington, DC-IAD.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: There is a flight with your requirement, airline is UA with price 100 and single connection.

USER: Ok, please proceed for booking.

ASSISTANT: Your booking is done and flight number is 1013.

USER: Thank you.

ASSISTANT: Thanks for reaching us.