You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Please help me to book a flight ticket from AUS to EWR.

ASSISTANT: Sure, let me know your travel dates please?

USER: My journey dates are from June, 12 to June, 14.

ASSISTANT: May I know your connection limit?

USER: I need a single connecting flight.

ASSISTANT: Do you need any other preference?

USER: No.

ASSISTANT: Can I know your name please?

USER: Shirley Perez.

ASSISTANT: Sorry to inform you that there are no flight services available on your given details.

USER: Thank you for your information.

ASSISTANT: Thank you for contacting us.