You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Nicole Martin.

ASSISTANT: Nicole, how can I help you today?

USER: I am trying to book a flight ticket from PHX to BOS. Can you help me?

ASSISTANT: Please let know me your travelling dates.

USER: My travelling dates are 12/20 and 12/22. Sure, I am able to spend the amount up to 200. So, please provide me the flight with this requirement.

ASSISTANT: I found a flight 1016 with price 200 for you.

USER: Ok, then you can proceed with booking.

ASSISTANT: Your ticket is booked with Southwest airlines.

USER: Thank you for assisting me.

ASSISTANT: Thank you so much.