You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hai, How can I help you?

USER: I want to book a flight from Boston, MA-BOS to Chicago, IL-ORD.

ASSISTANT: May I know your travelling dates for booking a ticket?

USER: My departure date is Mar 24 and return date is Mar 26.

ASSISTANT: Due you need any connection limits?

USER: Yes. It should be 1. And price of the ticket should be within 500.

ASSISTANT: OK Sure, Please give me some time I will check the availiability.

USER: Please, take as much time as you need.

ASSISTANT: Thankyou, For your patience your flight_number:1006 and can you please provide yor name.

USER: My name is Elizabeth Evans. Does this flight meet all of my requirements?

ASSISTANT: Yes, Everthing is done as per your requirement.

USER: OK. Then book the flight and give me the confirmation.

ASSISTANT: OK, Thank you. Have a happy day.