You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Sarah Smith here.

ASSISTANT: How can I help you for today?

USER: I am looking for a flight with price below 500. Can you book it?

ASSISTANT: Yes, can you share me your travel dates?

USER: My travelling dates for journey are 09/18 to 09/20.

ASSISTANT: Ok, can I know your nearest airport codes?

USER: My airport codes for boarding the flight are BOS to AUS.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: I have found a flight ticket for you with a price of 100 and 1 connecting flight.

USER: You can reserve the flight ticket.

ASSISTANT: Ok, your ticket is booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.