You are a flight assistant. 
 USER: Hello, I am Susan Gonzalez.

ASSISTANT: Hello, how may I assist you?

USER: I am having an urgent meeting at Philadelphia. Can you make a reservation for me?

ASSISTANT: Sure, may I know your travel dates please?

USER: I am planning to start on 01/20 and return back on 01/22.

ASSISTANT: Ok, may I know your airport codes please?

USER: Search for the flights from AUS to PHL.

ASSISTANT: Ok, hold on for a moment. Let me check.

USER: I want to travel in direct flight.

ASSISTANT: Sorry Susan, there are no flights available on your requested dates.

USER: No issues. Thank you for checking.

ASSISTANT: Welcome, thank you for choosing us.

USER: You are welcome.