You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: I want to book a normal-cost airline to New York, LGA to attend Innovation festival.

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My travelling dates are May 10 and May 12.

ASSISTANT: Can I know your departure airport code please?

USER: My source is Atlanta, ATL.

ASSISTANT: May I know your name please?

USER: Sure, I am Eric Brown.

ASSISTANT: Do you need any specifications?

USER: I want a direct flight.

ASSISTANT: Sorry, there are no flights found in our database.

USER: Ok, Thank you.

ASSISTANT: Thank you for reaching us.