You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I best serve you?

USER: I am David Harris.

ASSISTANT: Thank you for providing your name.

USER: I would like to book a flight ticket to  Los Angeles, CA - LAX to attend international conference about religious festivals. Can you please reserve a flight ticket with connecting flight?

ASSISTANT: Sure, can I have your planned travelling dates?

USER: My journey start on 09/22 and need to catch return flight on 09/24.

ASSISTANT: Let me know your source point?

USER: My source point is Houston, HOU.

ASSISTANT: How much can you spend in booking your flight ticket?

USER: I  can spend up to 500.

ASSISTANT: We found a flight 1003 in South west airline the price is 100 with one halt.

USER: Ok, proceed.

ASSISTANT: Shall I proceed with booking? Your ticket has been confirmed.

USER: Thanks for your service.

ASSISTANT: Thank you for making us to serve you.