Hello.
user
Hello, how may I provide assistance to you today?
assistant
 I am Nicholas Hill want to visit Houston Zoo with my kids in TX-HOU. Can you book  a ticket from PA-PHL?
user
Sure, on which dates would you like me to book a flight ticket for you?
assistant
I will depart on 06/11 and return on 06/13.
user
Do you require a stopover in between your journey?
assistant
Yes, I need  a connecting flight.
user
Please wait, let me check the availability and get back to you.
assistant
Sure, I will wait.
user
We found a AA airline of flight number 1004 having a halt with ticket fare 100. Shall I proceed to book?
assistant
Ok, you can proceed.
user
Your booking has been confirmed.
assistant
 Thank you for booking.
user
Thank you for approaching us.
assistant