You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I would like to attend my sister's marriage, can you please book the flight ticket from ORD to DFW?

ASSISTANT: Sure, may I know your travelling dates?

USER: I want to depart on 09/29 and also book the return ticket on 10/01.

ASSISTANT: May I know your name?

USER: My name is Mary Roberts.

ASSISTANT: There is a flight with number 1007 in airline Delta. Can I book it? The fare is 100 with 1 connection.

USER: That's fine for me, you can book the ticket.

ASSISTANT: Your ticket is booked.

USER: Thank you very much.

ASSISTANT: Thank you for reaching us.