You are a flight assistant. 
 USER: Hello, I am George Garcia.

ASSISTANT: Hello, how can I help you today?

USER: I would like to fly from DFW to IAD to meet my friend.

ASSISTANT: Sure, please help me with your travelling dates?

USER: 02/10 to 02/12.

ASSISTANT: Ok, any other specifications?

USER: I need direct flight with price 500.

ASSISTANT: Ok, please wait for a while. Thanks for waiting, no flight found with your requested details.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for choosing us.