You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Can you please help me in booking a flight ticket from EWR to LGA?

ASSISTANT: Sure, may I know your travel dates?

USER: My travel dates are from May 22nd to May 24th.

ASSISTANT: Do you have any specifications?

USER: I need a direct flight to travel.

ASSISTANT: May I know your name?

USER: I am Charles Brown.

ASSISTANT: Ok, please wait a minute.

USER: Ok.

ASSISTANT: Sorry, there were no flights found on your route.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.