You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: I am Jessica Allen. I am planning to visit Millennium park at Chicago, could you please help me with booking a flight ticket from Boston?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: I would like to take off on 08/16 and return on 08/18.

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

USER: My source airport code is BOS and destination airport code is ORD.

ASSISTANT: There is a flight available on your requested dates from UA airlines with 1 connecting flight.

USER: Make sure that the ticket fare is 200 or less.

ASSISTANT: Your ticket is booked with flight 1008.

USER: Thank you for your service.

ASSISTANT: You are welcome.