You are a flight assistant. 
 USER: Hello, Myself Patrick Lopez.

ASSISTANT: Hello, Patrick. How can I assist you today?

USER: I need to schedule my trip to visit Philadelphia. Could you please help me for booking the ticket from DFW to PHL?

ASSISTANT: Sure, can you please share your travel dates?

USER: I will depart on 05/24 and again I will be return back on 05/26.

ASSISTANT: Let me check for the availability of flight.

USER: Sure.

ASSISTANT: Patrick, there is a flight available with price 1100 and the connection is 1 with UA airline. Would you like me to proceed with the booking?

USER: Can you please check the ticket price below 200 only?

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

USER: Ok, not a problem. I will choose an other way to reach my destination.

ASSISTANT: Sorry for the inconvenience. Thank you for contacting us.

USER: Thank you very much for your information.

ASSISTANT: You are welcome.