You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you at this moment?

USER: I am Gary Martinez here, I want to reserve my ticket from AUS to PHL, can you please help me?

ASSISTANT: Sure, I am happy to aid you in booking flight ticket. Could you please mention your preferable travel dates?

USER: Sure, my preferable dates of travel are from 08/26 to 08/28.

ASSISTANT: Ok, just give me a moment, I will check flight availability in this route.

USER: Sure, I want a flight which is direct for me to travel.

ASSISTANT: Sure, please wait a moment.

USER: Ok, I will wait.

ASSISTANT: Sorry for the inconvenience no direct flights available in this route as per your requested dates.

USER: Ok, no problem. Thank you for your service.

ASSISTANT: Thank you for contacting us, have a good day Gary Martinez.