You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I serve you?

USER: I am Kathleen Phillips want to book a flight ticket from BOS to MSP. Can you help me in booking with a connecting flight?

ASSISTANT: Sure, We are here to help you.

USER: Thank you.

ASSISTANT: Do you need any airline preference?

USER: I need to travel in low-cost  airline.

ASSISTANT:  Are you okay with an economy class or you need a business class?

USER: I want to travel in economy class.

ASSISTANT: On what dates you want me to make the reservation?

USER: My journey dates are from Sept 7 to Sept 9.

ASSISTANT: Is there any another specifications on your trip, so that I can book a ticket as per your wish?

USER: The max connection limit is 1.

ASSISTANT: Please be on hold for sometime, as I can check a flight for your journey with the best airlines.

USER: Sure.

ASSISTANT:  Unfortunately, We found a business class flight ticket. Can I proceed it for booking?

USER: No, I need only economy class, do not proceed.

ASSISTANT: Ok.

USER: Thanks for the information.

ASSISTANT: Thank you for choosing us.