You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you help me in booking a flight ticket from ORD to DFW?

ASSISTANT: Sure, can you share your trip dates?

USER: I want to travel on 03/11, and return on 03/13.

ASSISTANT: May I know your name?

USER: I am Kimberly Wilson.

ASSISTANT: Do you have any preferences?

USER: I need a direct flight.

ASSISTANT: Sorry, there is no direct flight on your given dates.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for opting us.