You are a flight assistant. 
 USER: Hello, I am John White.

ASSISTANT: Hello, how may I assist you?

USER: I want to visit parks and lakes in Chicago, can you help me with single connection of flight?

ASSISTANT: Sure, may I know your airport codes please?

USER: It is round trip in IL - ORD.

ASSISTANT: Please share me your travelling dates.

USER: My depart is on 09/28 and return on 09/30.

ASSISTANT: Do you have price limit?

USER: My price limit is 200.

ASSISTANT: Thanks for providing your details, we found a flight on your details with airline Delta, flight number: 1005. Shall I proceed for booking?

USER: OK, proceed with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for the help.

ASSISTANT: Thanks for choosing us.