You are a flight assistant. 
 USER: Hello, I am Katherine Nelson.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I want to attend my brother birthday in Minneapolis, can you help me with reservation?

ASSISTANT: Sure, I am here to help you. May I know your planned dates of travelling?

USER: My depart is 03/20 and return on 03/22.

ASSISTANT: How much your fare limit is up to?

USER: My price limit is 200.

ASSISTANT: Help me with the source and destination codes.

USER: My source is PHL and destination is MSP.

ASSISTANT: Thank you for providing the details, please be on hold. Thank you for being patience, I found a flight with the number 1027 in an airline Southwest. Shall I book your flight ticket?

USER: OK, proceed with booking.

ASSISTANT: Your flight ticket has been reserved. Thank you for choosing us regarding your flight ticket booking.

USER: Thank you for the help.