You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am planning to visit Institute of Chicago with my friends, can you help me with booking?

ASSISTANT: Sure, help me with the trip dates?

USER: My trip dates are July 08 and July 10.

ASSISTANT: May I know your name please?

USER: I am Nancy Davis.

ASSISTANT: Can I have your airport codes please?

USER: My airport codes are DCA to ORD.

ASSISTANT: Do you have any preferences?

USER: I need a lay by in between my journey.

ASSISTANT: We found a flight in an airline American with 1005 number having a single connection in an econmy class. Shall I proceed to book?

USER: Please proceed.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.