You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Jason Walker here, for my business meeting purpose I came to EWR, now for my next meeting I need to go to LGA, can you please check once is there any flight available from EWR to LGA?

ASSISTANT: Sure, I'm here to help you. Can you please provide your journey dates?

USER: I would like to start on 03/15 and return on 03/17, because I have another meeting at EWR very next day.

ASSISTANT: Sorry to say this Jason, there are no flights available on your requested dates. Sorry for the inconvenience provided.

USER: Ok, no issues, thank you for your service.

ASSISTANT: Welcome. Thank you for choosing us.