You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I aid you?

USER: Please book a ticket from Atlanta, GA-ATL to New York, NY-LGA for an auto show.

ASSISTANT: Sure, I am here to assist you. Please share me your trip dates?

USER: Travelling dates are from 05/30 to 06/01.

ASSISTANT: Do you have any other requirements?

USER: Price limit is 5000.

ASSISTANT: May I know your good name please?

USER: I am Nicholas Walker.

ASSISTANT: Sorry to inform you that, no flights are available with your specifications.

USER: Thanks.

ASSISTANT: Thank you for reaching us.