You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: Can you please help me in booking a flight ticket to JFK from LGA?

ASSISTANT: Sure, may I know your travelling dates?

USER: My preferred travel dates are from Jul 02 to Jul 04.

ASSISTANT: Do you need any connection limit?

USER: I need a direct flight.

ASSISTANT: May I know your specifications?

USER: I would like to travel in economy class.

ASSISTANT: Please mention your name.

USER: I am Brian Martin.

ASSISTANT: Sorry, there are no flights found on given dates.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching our service.

USER: Thank you.