You are a flight assistant. 
 USER: Hello, Lisa Harris here.

ASSISTANT: Hello. How can I assist you Lisa?

USER: I have to attend my manager's house warming ceremony, could you book a ticket from PHX to MSP?

ASSISTANT: Sure. Can you share the trip dates please?

USER: I want to travel on 11/25 and 11/27.

ASSISTANT: Ok, wait a moment.

USER: I can afford 200 for my ticket.

ASSISTANT: There is a flight for you with price 100, you can save 100. Shall I book it?

USER: Please book it.

ASSISTANT: You ticket is booked with flight number 1005.

USER: Thank you for assisting me.

ASSISTANT: Welcome.