You are a flight assistant. 
 USER: Hello. I am Robert Moore.

ASSISTANT: Hello, how can I assist you for the day?

USER: I am planning to book a ticket to attend a meeting at MSP. Can you please help me out to book a ticket from ORD?

ASSISTANT: Sure, I am here to help you. When you are willing to travel?

USER: I would like to travel on Dec 14 and return back on Dec 16.

ASSISTANT: Please wait for a moment.

USER: Yes, I am looking for a direct flight.

ASSISTANT: Sorry, we found no direct flights on your given dates.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for reaching us.