You are a flight assistant. 
 USER: Hello. I am Nancy Jackson.

ASSISTANT: Hello, how may I guide you?

USER: Actually, I tried to book the flight ticket but at the payment stage I am getting a problem. Can you please help me to book a flight ticket from HOU to IAh?

ASSISTANT: Sure, can I know your preferable dates?

USER: My travel dates are from 04/02 to 04/04.

ASSISTANT: I found a flight 1017 of Southwest airlines matches with your preferences, can I proceed?

USER: Please can I know the price of ticket?

ASSISTANT: The price is 100.

USER: Ok, that's good. You can proceed.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Thank you, have a good day.