You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I am Jessica Adams. Can you book a flight ticket from DFW to ORD?

ASSISTANT: Sure, I am very happy to help you with that, may I know your preferable dates?

USER: My planned travel dates are Mar, 6 and Mar, 8.

ASSISTANT: Do you have any airline preference?

USER: I am comfortable with any airlines and make sure that my return ticket must be in the morning time.

ASSISTANT: Sorry, no flights are available on your desired route.

USER: Ok, not an issue. Thank you for the information.

ASSISTANT: Thank you for opting us.