You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Dennis Garcia here.

ASSISTANT: How can I assist you today?

USER: Can you please check for the flights from CLT to LGA for my journey?

ASSISTANT: Sure, I can help you with that. May I know your travel dates please?

USER: My travelling dates are from Jan 26 to Jan 28.

ASSISTANT: May I know in which class do you wish to travel?

USER: Any class is ok for me.

ASSISTANT: Do you have any time concerns?

USER: My depart and return time will be in the evening only.

ASSISTANT: Please let me know if you have any other specifications.

USER: I need a single connection flight.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry to say, there are no flights available for you on those dates with your given details.

USER: Oh! That's fine. Anyways, thank you for checking.

ASSISTANT: Thank you for choosing us, have a nice day.

USER: Most welcome.