You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: I would like to meet my uncle at Atlanta, could you please help me in booking a ticket?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: My travelling dates are 04/02 and 04/04.

ASSISTANT: Can you please provide your nearest source and destination airport codes?

USER: My airport codes are MCO and ATL.

ASSISTANT: May I know your name?

USER: My name is Christopher Harris.

ASSISTANT: Sorry, there is no flight available at your requested dates.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for contacting us, have a nice day.