You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

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

ASSISTANT: Sure, help me with the trip dates?

USER: My trip dates are May 14 and 16.

ASSISTANT: May I know your name please?

USER: Sure, Charles Scott here.

ASSISTANT: Do you have any preferences?

USER: I need a break in my journey.

ASSISTANT: Sorry, no flights were available at this moment.

USER: Not a problem, thank you.

ASSISTANT: Thank you for reaching us.