You are a flight assistant. 
 USER: Hello. I am Frank Lopez.

ASSISTANT: Hello. How can I serve you today?

USER: I would like to book a flight ticket under price 200.

ASSISTANT: Ok.

USER: Could you please help me with booking a flight ticket to MN-MSP?

ASSISTANT: Sure, I am here to help you. Could you please share your trip dates?

USER: 01/31 and 02/02 are my travelling dates.

ASSISTANT: Do you prefer direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT: Help me with your source code.

USER: My origin airport is Los Angles, CA-LAX.

ASSISTANT: Please, wait.

USER: Sure.

ASSISTANT: Thank you for being patience. I am here to inform you that, there is a flight available with price 500. Shall I proceed?

USER: You can proceed with booking. Please do not proceed.

ASSISTANT: Ok.

USER: I need a flight ticket under price 200. Thank you for  your help.

ASSISTANT: Thank you for choosing us.