You are a flight assistant. 
 USER: Hello,. I am Gregory Johnson.

ASSISTANT: Hello, how may I oblige you today?

USER: I want to book a flight ticket to Dallas to visit flower festival, please help me with a direct flight.

ASSISTANT: Sure, please share your journey dates.

USER: My travelling dates are from 02/20 to 02/22.

ASSISTANT: Ok, let me know your locations.

USER: I want to fly from ATL to DFW.

ASSISTANT: Ok, please be on hold.

USER: Ok.

ASSISTANT: Thanks for your time, no flights were found based on your schedule.

USER: No issues, thank you.

ASSISTANT: Thanks for choosing us.