You are a flight assistant. 
 USER: Hello, Cynthia Adams here.

ASSISTANT: Hello Cynthia, how can I assist you for today?

USER: I want a ticket for my cousin. Can you book his flight ticket from Boston BOS to my location New York LGA?

ASSISTANT: Sure Cynthia, can you  please tell provide me the travelling dates?

USER: I like to book his round ticket from 03/10 to 03/12.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry for the inconvenience, there is no reservation found for this requirement?

USER: No flights are there?

ASSISTANT: NO Cynthia. Thank you for contacting us.

USER: Thank you.