You are a flight assistant. 
 USER: Hello, I am Nicole Gonzalez.

ASSISTANT: Hello, how may I assist you?

USER: I have a chance to be a volunteer in WHO organisation in Charlotte, can you aid me for booking a flight with the price limit of 5000?

ASSISTANT: Sure, let me know your travelling dates?

USER: My travelling dates are from 12/27 to 12/29.

ASSISTANT: Ok, may I know your journey points?

USER: My source is CA - OAK and destination is NC - CLT.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: We are glad to inform that we found a flight with your requirements. Flight number: 1018, airline: AA and price of 100 with one connection. Shall I proceed for booking?

USER: Ok, you can proceed for booking.

ASSISTANT: Ok, your ticket has been reserved. Have a safe journey.

USER: Thanks for booking.

ASSISTANT: Thanks for choosing us.