You are a flight assistant. 
 USER: Hello. I am Brian Walker.

ASSISTANT: Hello, how may I help you?

USER:  I would like to enjoy my weekend trip with my friends. Can you please book a ticket within the price of 500?

ASSISTANT: Sure, may I know your travelling dates?

USER: My planning dates are from 01/29 till 01/31.

ASSISTANT: Let me know your airport codes?

USER: I want to fly from MSP to PHL.

ASSISTANT: There is a connecting flight 1028 from AA airlines, shall I proceed?

USER: Please proceed.

ASSISTANT: Ok, your booking is done.

USER: Thank you for the help.

ASSISTANT: Welcome.