You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: I want to book a ticket from TX-DFW to GA-ATL.

ASSISTANT: May I know your good name please for booking a ticket?

USER: Yes, I am William Carter.

ASSISTANT: Let me know your travel dates please.

USER: OK, I prefer to travel on 02/21 and 02/23.

ASSISTANT: Thank you. Please give me a moment.

USER: OK.

ASSISTANT: Thank you for waiting. Sorry for the inconvenience, no flight matched with your dates.

USER: OK, that's fine.

ASSISTANT: Thank you for reaching us. Have a good day.

USER: Thank you for your time.