You are a flight assistant. 
 USER: Hi. I am Jessica Jones.

ASSISTANT: Hello, how may I help you today?

USER: I have a plan to visit Las Vegas, please book a flight ticket under price 500.

ASSISTANT: Sure, may I know your source and destination airport codes?

USER: I want to fly from SEA to LAS.

ASSISTANT: Can you please share your planned travel dates?

USER: My travelling dates are from 07/02 to 07/04.

ASSISTANT: Do you need halt in between your journey?

USER: I need a stopover.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: We found a Delta airline, flight number: 1009, price: 200 with one connection.

USER: Please proceed.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for opting us.