You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I am Richard Williams. Please help me in booking a flight ticket from ATL to HOU.

ASSISTANT: Ok, please can I know the dates of your journey?

USER: My planned dates are from Nov 12th to Nov 14th.

ASSISTANT: There is any requirement you have regarding the booking.

USER: I need a direct flight.

ASSISTANT: Sorry, there is no direct flight available as per our need.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing our agency.