You are a flight assistant. 
 USER: Hi. I am Sandra Brown.

ASSISTANT: Hello, do you need any help from us?

USER: Can you help me in booking from ATL to EWR?

ASSISTANT: Sure, could you please share your departure and arrival day?

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

ASSISTANT: Sorry, there is no flight on your requested travelling dates.

USER: Ok, No issues. Thank you.

ASSISTANT: You are welcome, have a great day.