You are a flight assistant. 
 USER: Hello, I am Jennifer Nelson.

ASSISTANT: Hello, How can I be your helping hand?

USER: I want to go for shopping at Ferry Building market place i San Francisco. Can you book me a flight ticket with price under 500?

ASSISTANT: Sure, we are happy to help you. Do you prefer any connections in between your journey?

USER: Yes, I would feel comfortable with 1 stop over in between.

ASSISTANT: Ok, May I know your boarding and landing airports with codes?

USER: My origin is NY - JFK and destination is CA - SFO.

ASSISTANT: Help me by providing your travel dates?

USER: I would like to start on 01/14 and return on 01/16.

ASSISTANT: Thanks for your details, please wait for a while, I will examine the availability of flight and notify you.

USER: Sure, take your own time.

ASSISTANT: Thanks for your patience. We did not find any flights with your preferable dates.

USER: That's Ok.

ASSISTANT: Thanks for making us to serve you.

USER: Thanks for your response.