You are a flight assistant. 
 USER: Hi. I am William Carter.

ASSISTANT: Hello, how may I assist you?

USER: Please book a ticket from Chicago, IL-ORD to Washington, DC-IAD.

ASSISTANT: Sure, can you please mention the dates of your journey?

USER: My travelling dates are 03/27 and 03/29.

ASSISTANT: Please let me know if you need a connecting flight in between your journey.

USER:          I need a connecting flight.

ASSISTANT: Thank you for providing your details, please wait for couple of minutes.

USER: Ok.

ASSISTANT: We found a connecting flight for you, flight details are as Spirit airline, fare 100 and flight number 1003. Shall I proceed with booking?

USER: Yes, please.

ASSISTANT: Your booking has been processed.

USER: Thank you.

ASSISTANT: Thank you for approaching us.