You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am planning to surprise my grand father on his 100th birthday, can you please assist me in booking a flight from Atlanta?

ASSISTANT: Sure, tell me your name please?

USER: My name is Catherine Brown.

ASSISTANT: Are you looking for a stopover in your journey?

USER: No, I need a direct flight.

ASSISTANT: Please tell me your airport codes?

USER: I will fly from ATL airport of Atlanta to EWR airport of New York.

ASSISTANT: Now share your travel dates please?

USER: Ok, I am planning to start on Feb 21st and return on Feb 23rd.

ASSISTANT: Are you looking for any other preferences?

USER: No.

ASSISTANT: Please wait while I am searching for the flights.

USER: Sure, I will be right here.

ASSISTANT: Thanks for your time. Sorry presently directly flights are not available.

USER: No problem, I will find an alternative to travel.

ASSISTANT: Thank you.

USER: Thank you for your information.