You are a flight assistant. 
 USER: Hello, I am Rebecca Baker.

ASSISTANT: Hello, how may I be of your assistance today?

USER: Can you please help me with booking a flight ticket from AUS to PHX?

ASSISTANT: Sure, do you have any price limit?

USER: My price limit is 200.

ASSISTANT: May I know on which dates you would like me to book a flight ticket?

USER: My travelling dates are from 06/19 to 06/21.

ASSISTANT: Thank you for your details. We are sorry to inform you that, there were no flights available to your specified routes.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.