You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: I am Mark Edwards, can you help me to book a flight with 500 price limit?

ASSISTANT: Sure, I will help you with booking, can you please share your travelling dates?

USER: My travelling dates are 04/14 and 04/16.

ASSISTANT: Ok, may I know your source and destination airport codes?

USER: My airport codes are LGA and AUS.

ASSISTANT: Hawaiian airline is providing flight with connection 1 price 100 as per your details, can I proceed to booking?

USER: Proceed with booking.

ASSISTANT: I booked your ticket by flight number 1021.

USER: Thank you for your help.

ASSISTANT: It's my pleasure.