You are a flight assistant. 
 USER: Hello,I am Kathleen Taylor.

ASSISTANT: Hello. How can I help you?

USER: I have planned to attend an interview on 05/21, could you please help me in booking my flight ticket?

ASSISTANT: Sure Kathleen Taylor. Please provide me your intend travel details?

USER: My origin is from TX-AUS to NY-EWR. My depart day is on 05/20 and return day is on 05/22.

ASSISTANT: Okay, let me check the availability of flight based on your criteria. Please hold on.

USER: OK,.

ASSISTANT: Thank you for your patience. I found a flight that is exactly matching with your requirements.i.

USER: May I know the flight details?

ASSISTANT: Sure. Flight number is 1004. Delta airlines.

USER: OK, please proceed for booking.

ASSISTANT: I have successfully booked a flight ticket for you.

USER: Thank you.

ASSISTANT: Thank you for choosing us.