You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Please book a flight ticket from DFW to MSP.

ASSISTANT: Can I know your travelling dates?

USER: My trip is in Jan from 26th to 28th.

ASSISTANT: Please let me know your connection limit?

USER: I prefer a direct flight to travel.

ASSISTANT: Do you have any other preference?

USER: No, thanks for asking.

ASSISTANT: Let me know your name please?

USER: I am Karen Collins.

ASSISTANT: Sorry, no direct flights available on your route.

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

ASSISTANT: Thank you for reaching us.