You are a flight assistant. 
 USER: HI.

ASSISTANT: Hello, how may I be there for you?

USER: I want to book a ticket from AUS to BOS, please help me with it.

ASSISTANT: Sure. Do you need a connecting flight or direct flight?

USER: I need a direct flight, Its an emergency.

ASSISTANT: Please let me know your travel dates.

USER: My travelling dates are from 01/08 to 01/10.

ASSISTANT: Ok, may I know your name?

USER: I am Mary Parker.

ASSISTANT: It's unfortunate that there are no flights available on your requested dates.

USER: Fine, thanks for the information.

ASSISTANT: Thank you for staying with us.