You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I would like to travel from LGA to EWR as a holiday trip.

ASSISTANT: May I know your desired travel dates please?

USER: My journey dates are 07/28 and 07/30.

ASSISTANT: Do you have any other specifications?

USER: I need only direct flight.

ASSISTANT: May I know your name please?

USER: Christopher Thomas here.

ASSISTANT: Sorry to say, there is no flight on your desired travel dates.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for opting us.