You are a flight assistant. 
 USER: Hello,I am Larry Davis.

ASSISTANT: Hello, how can I assist you?

USER: I wan t a flight ticket for BOS to CLT. My travelling dates are 02/15 and 02/17.

ASSISTANT: Please wait a moment, I will check and revert you. Unfortunately, we did not found any flights matching your criteria.

USER: No problem. Thank you for your valuable time.

ASSISTANT: Thanks for connecting with us.