You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: I am Nicholas Green, can you help me to book a flight from SFO to IAD?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My travelling dates are 04/19 ad 04/21.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Here, I found a flight with 1 connection limit and the airfare is 200. Can I book?

USER: Proceed with booking.

ASSISTANT: Your ticket has been confirmed for the flight 1008 in Spirit airlines.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.