You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I need to book a flight ticket to surprise my mother on her birthday.

ASSISTANT: Ok.

USER: Could you please help me to book a ticket with one connection?

ASSISTANT: Sure, I will help you. May I know your airport codes please?

USER: My journey starts from Houston, TX - HOU to New York, NY - JFK.

ASSISTANT: Please share me your travel dates?

USER: My travelling dates will be on 01/26 to 01/28.

ASSISTANT: Do you have any specification?

USER: Yes, I need connecting flight and I can afford 500.

ASSISTANT: May I know your good name please?

USER: Dennis White.

ASSISTANT: Thank you Dennis, we found a flight on your details with airline UA, flight number 1012. Shall I proceed for booking?

USER: You can proceed to booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thanks for choosing us.