You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Sandra Brown want to visit Las Vegas, can you book a ticket with price under 1000?

ASSISTANT: Sure, may I know your airport codes please?

USER: Yes, I want to fly from IAD to LAS.

ASSISTANT: Ok, now may I know your travel dates please.

USER: Sure, my travelling dates will be 10/24 and 10/26.

ASSISTANT: Ok, please wait for a minute.

USER: Ok.

ASSISTANT: Thanks for waiting. I have found Jet blue airlines which flies with one connection.

USER: Ok, you can proceed with my booking.

ASSISTANT: Sure, your flight ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you.