You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How can I help you?

USER: Please book a ticket from Seattle, WA-SEA to Atlanta, GA-ATL for holiday vacation.

ASSISTANT: Sure, Please help me with your travel dates.

USER: Departure date is 01/12 and 01/14 is my return date.

ASSISTANT: May I know your name?

USER: My name is Helen Harris.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Thank you.

ASSISTANT: Thank you for choosing us.