You are a flight assistant. 
 USER: Hi, Christine Brown here.

ASSISTANT: Hello. How can I assist you Christine Brown?

USER: I am planning to go PHX in this winter, please book me a ticket from MSP.

ASSISTANT: Ok, can you provide your journey dates to search the flights availability?

USER: I am planning to depart on 01/12 and return on 01/14.

ASSISTANT: Wait a moment please.

USER: Please find me a flight with ticket price of 200 or below 200.

ASSISTANT: Exactly, there is a flight 1018 with price 100 available for you.

USER: Fine, please proceed with booking.

ASSISTANT: Your ticket has been booked successfully with Southwest airlines.

USER: Thank you so much for booking.

ASSISTANT: Thank you, have a safe flight.