You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you help me to book a flight ticket from CLT to DFW?

ASSISTANT: Sure, can you share your trip dates?

USER: My travel dates are Feb 02 and Feb 04.

ASSISTANT: Do you have any specifications?

USER: I prefer connecting flight for this trip.

ASSISTANT: May I know your name?

USER: I am Melissa Lee.

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

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.