You are a flight assistant. 
 USER: Hi. Alexander Thompson here.

ASSISTANT: Hello. How can I assist you?

USER: Reserve a flight ticket for me that is from AUS to ATL. For my business trip to Atlanta.

ASSISTANT: Ok, may I know your travelling dates?

USER: I need a connecting flight.

ASSISTANT: Ok.

USER: My travel dates for the journey would be from 06/19 to 06/21.

ASSISTANT: Sorry, I did not find any flights to reserve your ticket on your dates.

USER: It is ok not a problem. I will find with out with any other airline. Thank you.

ASSISTANT: Thank you for reaching us.