You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Nicholas Taylor. Do you have any flight from EWR to LGA?

ASSISTANT: Could you please let me know your travel dates?

USER: My travel dates are 08/17 and 08/19.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry Taylor, I did not find any available flight on your given dates.

USER: It's ok, thanks for your help.

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