You are a flight assistant. 
 USER: Hi, I am Scott Carter.

ASSISTANT: Hello, how can I aid you today?

USER: I would prefer to visit to Philadelphia PHL to collect certificates from Philadelphia university. Can you make a reservation from LGA?

ASSISTANT: Sure, please share me your connection limit?

USER: Yes, I need a halt.

ASSISTANT: May I know your budget for flight ticket?

USER: Sure, my affordable price limit is 1000.

ASSISTANT: Please mention your planned journey dates?

USER: Sure my planned dates are 11/28 and 11/30.

ASSISTANT: Please wait for a while, I check for the flight availability.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry there is no flight available on your journey data.

USER: Ok, no worries at all. Thank you for your help.

ASSISTANT: Thank you for visiting us.