You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Can you please book the ticket from PHL to IAH? As I'm planning to visit Houston.

ASSISTANT: Sure, We are here to help you. Can I know your travelling dates?

USER: Sure, I would like to depart from my source location on 18th Aug and I want to return back by 20th Aug.

ASSISTANT: Do you need any break?

USER: I prefer single connected flight.

ASSISTANT: May I know your name?

USER: My name is Gregory Perez.

ASSISTANT: Is there any other specifications?

USER: I don't have any other specifications.

ASSISTANT: We found a connecting flight with an AA airlines, flight number:1003.

USER: That's fine for me, you can proceed for booking.

ASSISTANT: Your flight ticket has been reserved with an economy class.

USER: Thank you so much for your help.

ASSISTANT: Thank you for reaching us.