You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am Robert Robinson, could you help me with booking ticket from ATL to LGA?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: Ok, my journey dates are from May 10 to 12.

ASSISTANT: Do you have any requirements?

USER: Yes, I need a direct flight.

ASSISTANT: Sorry to say, no flight is available for you.

USER: It's ok, thanks for checking.

ASSISTANT: Thank you for reaching us.