You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, How can I help you?

USER: Please book a ticket from Dallas & Fort Worth, TX-DFW to Atlanta, GA-ATL.

ASSISTANT: Sure, May I know the travel dates?

USER: Departure is by 07/25 and 07/27 will be return date.

ASSISTANT: May I know your name?

USER: I am Betty Wilson.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Thanks for your help.

ASSISTANT: Thank you for choosing us.