You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Larry Parker, want to travel from EWR to LGA. Please help me.

ASSISTANT: May I know your trip dates?

USER: My trip dates are from 07/30 to 08/01.

ASSISTANT: Do you have any other requirements?

USER: My arrival time will be in  morning and also I need a direct flight.

ASSISTANT: Sorry, we regret to inform you that there is no flight available as per your request.

USER: It's ok, thank you.

ASSISTANT: Most welcome.