You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you today?

USER: Can you please help me in booking flight ticket from BOS to AUS?

ASSISTANT: Sure, I am here to help you. May I know your name please.

USER: I am Matthew Roberts .

ASSISTANT: Please mention your journey dates?

USER: My travelling dates are 03/20 and 03/22.

ASSISTANT: Ok, please wait a while.

USER: Ok, sure.

ASSISTANT: Sorry Roberts, no flights are available on your desired route.

USER: Ok, fine thank you for checking.

ASSISTANT: Thank you for reaching us.