You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Will you please make a reservation on Elizabeth King to AUS?

ASSISTANT: Sure, May I know your departure airport code?

USER: I want to depart at IAH.

ASSISTANT: Can I know your preferable trip dates?

USER: My travelling dates are on Apr 18 and Apr 20.

ASSISTANT: Do you have any connection limit preference?

USER: I need only one connection.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Elizabeth King, here I found a connecting flight with United Airlines and the airfare is about 100. Shall I proceed in booking with flight 1000?

USER: You can proceed.

ASSISTANT: For an economy class your ticket is booked.

USER: Thank you.

ASSISTANT: Thank you for connecting us.