You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I help you?

USER: I am Paul Collins. I would like to take my children to Providence Children's Film Festival at Dallas.

ASSISTANT: Ok.

USER: Please book a connecting flight.

ASSISTANT: Sure, I am perky to help you. When are you willing to travel?

USER: My travelling dates are from 09/20 to 09/22.

ASSISTANT: Can I know your airport codes?

USER: I want to fly from HOU to DFW.

ASSISTANT: Please wait for a while, I will search flight for you.

USER: Ok.

ASSISTANT: Thank you for waiting, there is a flight available with AA airline, flight number 1008 with fare 100 and a lay by.

USER: Please go with booking.

ASSISTANT: Shall I proceed to reserve? Your booking has been done.

USER: Thank you.

ASSISTANT: Thank you for availing us.