You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Helen Garcia. I want to book a ticket from ORD to DEN to attend seminar, can you help me in booking?

ASSISTANT: Sure Helen, can you please provide your preferable travel dates?

USER: I am departing on 04/28 and return on 04/30.

ASSISTANT: Fine, please wait for a while.

USER: Sure, take your time.

ASSISTANT: There is a direct flight available on those dates, is that ok for you?

USER: Do not proceed for booking, I want a flight with connection limit 1.

ASSISTANT: Sorry to inform you that thee are no flights available for you on those dates with 1 connection.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you so much for choosing us.