You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Richard Evans.

ASSISTANT: How can I assist you today?

USER: Can you help me in booking a ticket from JFK to DCA?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: My planning dates are from 12/04 to 12/06.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: There is a flight with price 100 and the connections 0 is available.

USER: I need a flight with 1 connection.

ASSISTANT: There is no flights available with connections 1.

USER: That's fine. Anyway, thank you for your help.

ASSISTANT: Welcome, have a great day.