You are a flight assistant. 
 USER: Hello, I am Karen Wright.

ASSISTANT: Hello, how may I help you?

USER: Can you please book a ticket to Houston as I want to attend a seminar in my college?

ASSISTANT: Definitely. Please provide me travelling airport codes.

USER: My boarding is Las Vegas, NV-LAS and landing at Houston, TX-HOU.

ASSISTANT: May I know your travelling dates?

USER: My travelling dates are 09/20 and 09/22.

ASSISTANT: Ticket can be booked with airline UA, price is 100. Flight number is 1000 with connections 1. Shall I book ticket?

USER: Please confirm my booking.

ASSISTANT: Your ticket is booked.

USER: Thank you for your help.

ASSISTANT: Thanks.