You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: Can you please help me to book a flight from LGA to EWR?

ASSISTANT: Sure, can I know your good name please?

USER: I am Ronald Williams.

ASSISTANT:  When you are willing to travel?

USER: I want to travel on Feb 15 and need to return on Feb 17.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT:  Would you let us know if you have any other preferences?

USER: I do not have any other specifications.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Ok, not an issue. Thank you for checking.

ASSISTANT: Thank you for choosing us.