You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I support you?

USER: Donald Baker here. Can you please help me in booking a flight ticket from AUS to LAS?

ASSISTANT: Sure, help me with the trip dates?

USER: Sure, my travel dates are from Apr 17 to Apr 19.

ASSISTANT: Do you have any other preferences?

USER: I need a connecting flight.

ASSISTANT: We found a connecting flight from an airline Delta with 1025 number price of 100. Shall I reserve?

USER: Ok, please reserve.

ASSISTANT: Your flight ticket has been confirmed in an economy class.

USER: Thank you for booking.

ASSISTANT: Thank you for your approach.