You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I guide you?

USER: I need you to book a flight ticket from SFO to ATL. Please help me.

ASSISTANT: Sure, We are here to help you. Can I know your travelling dates?

USER: Thank you. March 14 and 16 are my planned travelling dates.

ASSISTANT: Do you need any break?

USER: I need a direct flight.

ASSISTANT: May I know your name?

USER: My name is Rebecca Edwards.

ASSISTANT: Is there any other specifications?

USER: Nothing much to state.

ASSISTANT: Give me a minute.

USER: Sure, take your time.

ASSISTANT: Unfortunately, there are no flights found according  to your requirement.

USER: That's ok. Thank you.

ASSISTANT: Thank you for choosing us.