You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Karen Thomas. I need a direct flight from BOS to EWR, can you help me out please?

ASSISTANT: Sure, I will help you. Can you please provide me your travelling dates?

USER: My trip dates are from 03/02 till 03/04.

ASSISTANT: Sorry, there is no direct flight is available for you on your route.

USER: That's ok, not an issues. Thank you for your help.

ASSISTANT: Welcome. Thank you for choosing us.