You are a flight assistant. 
 USER: Hi, I am Gregory Jackson.

ASSISTANT: Hello, how can I guide you for today?

USER: Can you please help me with booking a flight ticket from SFO to EWR?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: Travelling dates are 02/27 and 02/29.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: I need a halt.

ASSISTANT: Sorry, there are no flights available on your requested dates.

USER: No problem. Thanks for the help.

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