You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I am Janet Campbell, can you help me to book a flight within 500 price limit?

ASSISTANT: Sure, please provide your planned dates of your travel.

USER: My travelling date are 09/28 and 09/30.

ASSISTANT: Ok, Kindly mention your journey airport codes.

USER: My preferable airport codes are IAD and MSP.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Thank you for waiting, There is a flight found in 1011 Southwest plane with a price of 200.

USER: Proceed with booking.

ASSISTANT: Sure, your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for contacting us.