You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I aid you today?

USER: Please book a ticket from New York, NY-JFK to Dallas & Fort Worth, TX-DFW for holiday vacation.

ASSISTANT: Sure, when are you planning to travel?

USER: My travel dates are from 07/11 to 07/13.

ASSISTANT: Do you need a halt?

USER: I need a halt.

ASSISTANT: May I know your good name?

USER: My name is Dorothy Mitchell.

ASSISTANT: We found a direct flight, shall I proceed?

USER: Please do not book ticket.

ASSISTANT: Ok, thank you.

USER: Thanks.