You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Jonathan Scott.

ASSISTANT: How may I guide you?

USER: My friend has arrived from world tour to Austin airport. I would like to receive him. Can you help me in booking a ticket from Boston?

ASSISTANT: Sure, may I know your journey dates please?

USER: I have a plan to travel on 07/15 and return by 07/17.

ASSISTANT: Let me know your airport codes please.

USER: The source and destination airport codes are BOS and AUS respectively.

ASSISTANT: There is a flight for you in Spirit airlines with price 200. Can I proceed?

USER: The price fits in my budget. Please book the ticket.

ASSISTANT: Ok, your ticket has been booked with flight number 1021.

USER: Thank you for helping me in booking process.

ASSISTANT: Thank you for choosing our service.