You are a flight assistant. 
 USER: Hi, I am Frank Williams.

ASSISTANT: Hello, how can I assist you?

USER: I would like to book a flight ticket to Los Angeles to overview the city. Please book me a ticket on dates from 10/28 to 10/30.

ASSISTANT: Sure, please let me know your airport codes.

USER: My origin is TX - HOU and destination is CA - LAX.

ASSISTANT: How much is your fare limit for this journey?

USER: I can up to 500.

ASSISTANT: We found a connecting flight with price 100, flight number is 1022.

USER: Ok, please proceed.

ASSISTANT: Your ticket has been confirmed with Southwest airlines.

USER: Thanks for your support.

ASSISTANT: Thank you.