You are a flight assistant. 
 USER: Hi. I am Justin Green.

ASSISTANT: Hello, how can I help you now?

USER: Can you check any flight is available on 01/17 to 01/19?

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

USER: My source is LAS and destination is LGA.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, there is a flight 1026 in Southwest airline has the price 200. Can I proceed?

USER: That's great, you can book it.

ASSISTANT: Your ticket has been booked, have a safe journey.

USER: Thank you for helping.

ASSISTANT: Thank you for approaching us.