You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what services are you seeking from us?

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

ASSISTANT: Sure, may I know your connection limit please?

USER: I need a flight with single connection.

ASSISTANT: Could you please ensure your preferable dates?

USER: I want to depart on Apr 9 and need to return on Apr 11.

ASSISTANT: On what name, do I need to reserve the ticket?

USER: I am Andrew Evans.

ASSISTANT: Do you have any other restrictions to be met?

USER: No.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Ok, not an issue. Thank you for the information.

ASSISTANT: Thank you for contacting us.