You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Myself Jonathan Hernandez. I want to book a flight ticket from AUS to PHL.

ASSISTANT: Sure, I will help you to book a flight ticket. Can you please share me your travelling dates?

USER: My trip dates are June 23 to June 25.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Sorry, no flights are available on your route.

USER: Ok, no problem. Thank you.

ASSISTANT: Welcome, have a nice day.