You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: can you aid me to book a flight ticket from IAH to LAS?

ASSISTANT: May I know your preferred dates to reserve your seat?

USER: My trip dates are May 2 and May 4 respectively.

ASSISTANT: Do you need any connections between your trip?

USER: I prefer for single connecting flight.

ASSISTANT: May I know your name to proceed further.

USER: Katherine Brown here.

ASSISTANT: Is there any other requirements?

USER: No.

ASSISTANT: American airlines, flight number:1023 is going on your way with single connection and price:100. Is that Ok for you?

USER: Please proceed for booking.

ASSISTANT: Your ticket has been booked successfully.

USER: Thank you for the help.

ASSISTANT: Thank you for contacting us.