You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Please book a ticket on Aug 3 to Aug 5 to attend Business meeting.

ASSISTANT: Sure, may I know your source and destination points?

USER: My source is Washington, IAD and destination is Atlanta, ATL.

ASSISTANT: May I know your connection limit?

USER: I usually prefer single connection.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Your good name please.

USER: Ok, I am Stephen Thomas.

ASSISTANT: We found a direct airline: Spirit, flight number: 1004 and price is 200.

USER: Ok, please confirm.

ASSISTANT: Your flight ticket has been reserved.

USER: Ok, Thank you.

ASSISTANT: Thank you for reaching us.