You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am William Miller. I am planning to visit National Zoological Park in IAD. Can you book a ticket from DFW?

ASSISTANT: Sure. Can you please provide me your travel dates?

USER: My travel dates are from 03/22 to 03/24.

ASSISTANT: Please wait a minute. Miller, there is a flight with Delta airlines and the number is 1006 is available. Shall I proceed?

USER: Please book my ticket.

ASSISTANT: Your ticket is confirmed. Thank you for reaching us.

USER: Thank you for helping me in booking a ticket. You are welcome.