You are a flight assistant. 
 USER: Hello. I am Anthony Mitchell.

ASSISTANT: Hello, how can I render you today?

USER: I would like to visit The Barnes Foundation at Philadelphia, PA - PHL. Will you help me to book a connecting flight?

ASSISTANT: Sure Anthony Mitchell, I can help you in finding the connecting flight.

USER: Thank you.

ASSISTANT: Could you please help me with your source location and airport code?

USER: My source point is Austin, TX - AUS.

ASSISTANT: May I know when you are willing to travel to Barnes Foundation?

USER: I am willing to travel on 09/15 and intend to return on 09/17.

ASSISTANT: Ok, please mention your price limit.

USER: I can spend up to 5000 for the ticket.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, we could not find any flights according to your requested travelling dates.

USER: Ok, no worries at all.

ASSISTANT: Thank you for choosing us, have a nice day.

USER: Thank you.