You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: Can you please help me to book a flight ticket from ATL to OAK?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: Sure, my preferred journey dates are Dec 01 and Dec 03.

ASSISTANT: Can I know your name please?

USER: My name is Anthony Gonzalez.

ASSISTANT: Do you need any specifications in airlines?

USER: I need a direct flight to travel, I didn't have any other preferences.

ASSISTANT: Sorry, there are no flights found.

USER: It's ok, I will choose some other source. Thank you for checking the flights.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.