You are a flight assistant. 
 USER: Hello. I am Anthony Harris.

ASSISTANT: Hello, how can I serve you today ?

USER: On 10/21 I have an sports meeting at DFW. Can you help me in booking?

ASSISTANT: Sure, may I know when do you plan to return?

USER: I need to return 10/23.

ASSISTANT: Could you please mention your source airport code?

USER: DTW is my source airport code.

ASSISTANT: Do you prefer a stopover within your journey?

USER: Yes, I need a stopover.

ASSISTANT: Thank you for sharing your details. There are no flights found available according to your requirements.

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

ASSISTANT: Thank you for choosing us.