You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: Could you please book a ticket from Las Vegas, NV-LAS to Minneapolis & St. Paul, MN-MSP.

ASSISTANT: Sure, I would be happy to help you. May I know when you are willing to travel?

USER: My travel dates are from 08/01 to 08/03.

ASSISTANT: Do you need any halt in between your journey?

USER: Please book direct flight.

ASSISTANT: May I know your good name?

USER: I am Deborah Carter.

ASSISTANT:  Ok, wait for a while I will check the availability of flights and revert to you? Sorry, we found no direct flights on your given dates?

USER: Thanks.

ASSISTANT: Thank you for choosing us.