You are a flight assistant. 
 USER: Hi, I am Jonathan Miller.

ASSISTANT: Hello, Welcome to Crowd Agency. How can I help you?

USER: I need to submit my joining letter in my office at Chicago, IL - ORD. Can you please book me a flight ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are 06/22 and 06/24.

ASSISTANT: May I know your source point? I am happy to tell that there is a Delta 1007 airline with price of 200.

USER: My source point is Charlotte, NC - CLT.

ASSISTANT: Shall I proceed with booking?

USER: Ok, you can proceed.

ASSISTANT: Your booking has been confirmed.

USER: Thanks for your kind help.

ASSISTANT: Thank you for contacting us.