You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you please book a flight ticket from DEN to BOS?

ASSISTANT: Your travelling dates please?

USER: Thank you. I have planned my travel dates as Jan 17 and Jan 19.

ASSISTANT: Do you have any connection limit?

USER: I am looking for single connecting flight so please check with that.

ASSISTANT: Ok, is there any thing else?

USER: I would like to return in morning time so please make sure that.

ASSISTANT: There is a flight with single connection in spirit airlines, can I proceed for booking in 1013 flight?

USER: That is fine, please proceed with booking.

ASSISTANT: On which name can I proceed for booking?

USER: Sure, myself Kevin Clark.

ASSISTANT: Your booking is done in business class.

USER: Thank you for  your help.

ASSISTANT: Thank you for choosing us.