You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Can you help me to book a ticket from ORD to CLT?

ASSISTANT: Sure, can I know your name please?

USER: Dennis Mitchell.

ASSISTANT: May I know the travel dates please?

USER: My travel dates are April 19 and April 21 respectively.

ASSISTANT: Do you have any requirements?

USER: Make sure that connection limit is 1.

ASSISTANT: There is a connecting flight in Delta airline, can I book it?

USER: Please proceed.

ASSISTANT: Your ticket has been booked with flight number 1010.

USER: Thank you.

ASSISTANT: Thank you for approaching us.