You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Can you help me to book a flight from EWR to AUS?

ASSISTANT: Yes, can you tell me your dates of travel?

USER: My travelling dates are Apr 22 and 24.

ASSISTANT: Do you have any preferences?

USER: I want to depart at evening. I prefer connecting flight.

ASSISTANT: I have found an economy class ticket with a price of 200 and 1 connection.

USER: Proceed with booking.

ASSISTANT: Can I know your name for booking?

USER: My name is Rebecca Allen.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for contacting us.