You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Charles Gonzalez.

ASSISTANT: How may I help you?

USER: Can you please book me a ticket with the fare of 500 to meet my family friends?

ASSISTANT: May I know your airport codes please?

USER: I would like to leave between 01/31 and 02/02. Sorry, airport codes are from AUS to PHX.

ASSISTANT: Please hold on a moment.

USER: Ok. I will wait.

ASSISTANT: I found a flight in AA airlines with fare 100, can I proceed?

USER: Ok, please book this ticket.

ASSISTANT: Ok, your ticket has been booked with flight number 1007.

USER: Thank you.

ASSISTANT: Thank you for approaching us.