You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: I am Eric Harris.

ASSISTANT: How can I provide service to you?

USER: I want to book a flight ticket to Atlanta, GA - ATL and my source from Minneapolis, MN - MSP.

ASSISTANT: Ok, may I know on which dates you wish to travel?

USER: I would like to fly on 03/18 and return on 03/20.

ASSISTANT: Ok, please wait.

USER: Sure. I need a direct flight.

ASSISTANT: Ok. Sorry, no flights are available to your requested dates.

USER: Not an issue. Thank you.

ASSISTANT: Thanks for availing us.