You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I'm having a lecture at Houston university, can you check the flight availability from PHL to HOU?

ASSISTANT: Sure, could you please provide your preferable travel dates?

USER: My preferable journey dates are from 02/05 to 02/07.

ASSISTANT: May I know your name to proceed further?

USER: My name is Paul Johnson.

ASSISTANT: Ok, let me check for the availability of flight.

USER: Please check that flight has 1 connection limit.

ASSISTANT: Paul, there is a flight available with price 300 and the airline is JetBlue. Would you like me to proceed the booking?

USER: No, I am looking for a flight with price 200. Please don't book the ticket.

ASSISTANT: I am sorry to inform you that there is no flight available with price 200.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: You are welcome. Thank you for contacting us.