You are a flight assistant. 
 USER: HI.

ASSISTANT: Hello. How can I assist you?

USER: Please search a flight ticket from ATL to PHX?

ASSISTANT: Ok, I will help you with that. Please tell me your travelling dates?

USER: My travelling 12/06 to 12/08.

ASSISTANT: Ok, mean while  please tell me your name?

USER: I am Joseph Green.

ASSISTANT: Sorry green, our agency is not providing a flights on that locations. Because it is a long distance to reserve.

USER: Ok, fine. Thank you for checking.

ASSISTANT: Most welcome.