You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I best aid you for the day?

USER: Kathleen Lee here. I want to book a flight ticket from PHL to AUS. Can you help me in that?

ASSISTANT: When do you schedule your trip dates?

USER: My trip dates are Nov 18 to Nov 20.

ASSISTANT: Do you need a connecting flight?

USER: I need halt in between journey.

ASSISTANT: Do you have any other preferences?

USER: I need a flight in normal cost.

ASSISTANT: We found a connecting flight 1023 in AA airline with normal cost. Shall I proceed?

USER: You can proceed.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for your service.

ASSISTANT: Thank you, visit again.