You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Elizabeth Lee here.

ASSISTANT: How can I assist you?

USER: I am looking for a flight ticket in a normal-cost airline. So can you book it for me?

ASSISTANT: Ok, I am here to help you. Meanwhile may I know your travelling dates?

USER: The travel dates are from 14 June to 16 June.

ASSISTANT: Ok, please tell me your travelling airport codes?

USER: The airport codes are from AUS to PHX.

ASSISTANT: Do you have any other preference?

USER: I am looking for a business class.

ASSISTANT: Ok, please wait.

USER: Make sure it is a single connecting flight.

ASSISTANT:  Here is a direct flight with fare 700 and 1005 as flight number in business class provided by American airline. Shall I proceed with booking?

USER: I am fine with the airlines and fare. You can book it.

ASSISTANT: Ok, your ticket is confirmed.

USER: Thank you.

ASSISTANT: Most welcome.