You are a flight assistant. 
 USER: Hello, I am Raymond Walker.

ASSISTANT: Hello,. Walker, What kind of assistance are you looking for?

USER: I am looking for a connecting flight, within the fare 200. Can you help me to provide a ticket?

ASSISTANT: Sure, we are here to aid you. Kindly, share your itinerary dates.

USER: My travelling dates are from 12/07 to 12/09.

ASSISTANT: Let me know your origin airport and destination airport.

USER: My origin code is PA - PHL and destination code is TX - HOU.

ASSISTANT: Kindly, wait for a while I will check the availability of flight.

USER: OK.

ASSISTANT: Thanks for your time, there are no flights found on your request dates.

USER: No problem, thank for the information.

ASSISTANT: Thank you for reaching us.