You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Nicholas Green here. I am planning to visit a Denver City to enjoy my weekend from PHL to DEN. Can you find a flight ticket for me?

ASSISTANT: Ok, please mention your journey dates too.

USER: Sure, my planned trip dates are on 04/19 and back on 04/21.

ASSISTANT: Fine, wait a moment.

USER: Ok, please make sure that the connection limit 1.

ASSISTANT: As per the details, there is a connecting flight-1006 on AA airline. Shall I book it?

USER: Yes, please proceed with the booking.

ASSISTANT: Ok, your booking is done with your name.

USER: Thank you for your help.

ASSISTANT: Welcome, have a safe flight.