You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Can you please help me to book flight ticket from LAS to AUS?

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

USER: My trip dates are Apr 16 and Apr 18.

ASSISTANT: Do you have any other preferences?

USER: I prefer connecting flight which returns in the evening.

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

USER: Yes, you can proceed for booking.

ASSISTANT: Can I know your name for booking?

USER: I am Matthew Hernandez.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for contacting us.