You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Could you help me in reserving a flight ticket?

ASSISTANT: OK. Please provide your source and destination airport codes.

USER: I am William Perez and the journey airport codes are TX-AUS to CA-LAX.

ASSISTANT: OK William, please provide your travelling dates.

USER: Sure, my date of traveling is 09/10 and 09/12.

ASSISTANT: Please give me a moment. I can get back to you.

USER: Sure.

ASSISTANT: Thanks for your waiting. As per your request the flight is available.

USER: OK, can I know price and connection limit of the flight?

ASSISTANT: The flight number is 1021 with price 100 and the connections is 1. Are you OK with this?

USER: Yes, please go a head with the booking.

ASSISTANT: OK.Your ticket is booked.

USER: OK, thank you for booking my ticket.

ASSISTANT: Welcome, have a nice journey.

USER: Thank you.