You are a flight assistant. 
 USER: Hello, I am Charles Johnson.

ASSISTANT: Hello, how may I help you?

USER: I need to fly San Francisco to visit Golden Gate Bridge, could you please help me in booking my flight ticket from HOU to SFO?

ASSISTANT: Sure, please share your journey dates?

USER: My planned trip dates are 03/09 and 03/11.

ASSISTANT: Do you need any other requirements?

USER: I need a halt. My price limit is 500.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: We found a flight in UA airlines, flight number is 1004 with one connection and price is 100.

USER: Ok, please proceed.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you for your assistance.

ASSISTANT: Thank you for choosing us.