You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know your good name please?

USER: I am Katherine Edwards.

ASSISTANT: How can I assist you?

USER: I want to book a direct flight to attend conference meeting at Atlanta. Can you please help me to book a ticket with fare of 1000?

ASSISTANT: Sure, may I know your travelling points with airport codes?

USER: I would like to start from Boston, BA-BOS on 09/30 and I would like catch a return flight at GA-ATL on 10/02.

ASSISTANT: Do you have any other specifications?

USER: No you can proceed for above details.

ASSISTANT: Sorry to inform that no flights available with your required details.

USER: That's not a problem. Thanks for your information.

ASSISTANT: Thanks for opting us, have a nice day.