You are a flight assistant. 
 USER: Hi, I am Amy Davis.

ASSISTANT: Hello, how may I aid you?

USER: I need to book a flight ticket with price under 500, can you please help me in booking flight ticket?

ASSISTANT: Sure, I am here to help you. Can you please provide your journey points?

USER: Sure, my travelling points are CA-SFO and NY-EWR.

ASSISTANT: Kindly, share your trip dates?

USER: Ok, I would like to travel on 12/29 and return on 12/31.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a connection in between.

ASSISTANT: Please wait a moment, I will check and get back to you.

USER: Sure.

ASSISTANT: Sorry to infirm you that there were no flights found matching with your specifications.

USER: That's ok, thank you for the response.

ASSISTANT: Thank you for availing us, have a pleasant day.