You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How may I aid you today?

USER: I want to book a flight ticket, can you help me with that?

ASSISTANT: Sure, we are glad to help you. Can you please provide your journey details?

USER: Yes, my source : Boston, MA-BOS and my destination : New York, NY-JFK and my travelling dates are from Mar/23 to Mar/25, I prefer my price limit to be 200 with 1 connection.

ASSISTANT: Thank you for proving your details. May I know your good name please?

USER: Sure, my name is Gary Walker.

ASSISTANT: Thank you, please wait for a moment I will check the availability of flights.

USER: OK.

ASSISTANT: Thank you for waiting. Sorry, the flights are not available based on your price limit.

USER: Thank you for your response.

ASSISTANT: Thank you for contacting us.