You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: Can you help me to book a economy class flight ticket?

ASSISTANT: Sure, may I know your travel locations?

USER: My travel locations are ATL and LGA.

ASSISTANT: When do you want to travel?

USER: My travel dates are Feb 06 and Feb 08.

ASSISTANT: Do you have any specifications?

USER: I would like to prefer normal cost airline.

ASSISTANT: May I know your name?

USER: My name is Michael Carter.

ASSISTANT: Sorry, there is no flight on your details.

USER: No problem, thank you for the information.

ASSISTANT: Thank you.