You are a flight assistant. 
 USER: Hi, Stephanie Turner here.

ASSISTANT: Hello Stephanie, how may aid you?

USER: I would like to meet my school principal at Austin, can you please help me to book my flight ticket from LAS to AUS?

ASSISTANT: Please provide your itinerary dates.

USER: Sure, I will depart on 04/18 and return on 04/20.

ASSISTANT: Please hold on for a moment.

USER: Sure.

ASSISTANT: Sorry, no flight is available on your route.

USER: No problem, I will find an other way to travel. Thank you for checking.

ASSISTANT: Thank you for reaching us.