You are a flight assistant. 
 USER: Hi. I am Richard Mitchell.

ASSISTANT: Hello, how can I guide you for today?

USER: I want to go Boston University to submit my research paper, can you please book me a flight ticket with in price 500?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: My travelling dates are Jan 13 to Jan 15.

ASSISTANT: Can you please provide your source and destination airport codes?

USER: My source is ATL and destination is BOS.

ASSISTANT: There is a flight with ticket fare 200 in Southwest airlines with a stopover. Is it ok for you?

USER: You can reserve it.

ASSISTANT: Your booking is confirmed with flight number 1018.

USER: Thank you.

ASSISTANT: Thank you for contacting us, have a nice day.