You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am planning to visit my mother who is staying at Boston, could you help me with booking?

ASSISTANT: Sure, can I have your planned dates?

USER: My trip dates are 02/27 and 02/29.

ASSISTANT: Please share me your airport codes.

USER: I will fly from AUS to BOS.

ASSISTANT: May I know your name please?

USER: Laura Garcia.

ASSISTANT: Sorry, there are no flights with your requirement.

USER: No problem. Thank you.

ASSISTANT: Have a good day.