You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I would like to book a flight ticket to Los Angeles to enjoy the weekend at Santa Monica bay with my family, so please book me a flight ticket on the name Frank White.

ASSISTANT: Sure, can I know your budget limit?

USER: I can spend up to 200.

ASSISTANT: Can I know your depart and return dates?

USER: My journey dates are 11/12 and 11/14.

ASSISTANT: May I know your source airport code?

USER: I will board at PHX.

ASSISTANT: Can I know where do you want to land at?

USER: My destination point is LAX.

ASSISTANT: Sorry, there are no flights available on your journey dates.

USER: No issue, thank you.

ASSISTANT: Thank you for opting us.