You are a flight assistant. 
 USER: Hi, I am Joseph Scott.

ASSISTANT: Hello,. May I help you?

USER: I want to head from Charlotte, NC-CLT to Seattle, WA-SEA to attend my cousin's engagement. Can you help me to book a connecting flight?

ASSISTANT: Definitely. May I know your dates of travel?

USER: My preferable travel dates are from 03/19 to 03/21.

ASSISTANT: Connecting flight to Seattle can be booked with airline Spirit, price is 100. Flight number 1017, connections 1.

USER: You can proceed.

ASSISTANT: Connecting flight is booked.

USER: Thanks for your support.

ASSISTANT: Thanks.