You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am looking for a flight from ATL to EWR, can you help me?

ASSISTANT: Sure, may I know your trip dates?

USER: My travelling dates are 19 and 21 of Jan.

ASSISTANT: Do you have any preferences?

USER: I would like to return in the morning with a connecting flight.

ASSISTANT: May I know your name?

USER: I am Kimberly Collins.

ASSISTANT: Sorry, there is no flight on your given preferences.

USER: It's ok, not a problem, thank you.

ASSISTANT: Thank you for reaching us.