You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Brian Davis.

ASSISTANT: How can I serve you today?

USER: Magnificent Mile is a famous shopping world in Chicago, ORD. Can you please book a flight ticket to go for shopping in Chicago?

ASSISTANT: Sure, Let me know your planned travelling dates?

USER: My journey dates on, 11/17 and 11/19.

ASSISTANT: May I know your source point?

USER: My source point is Denver, DEN.

ASSISTANT: We found a flight 1015 in Spirit airline with a fare of 100. Are you comfortable with it?

USER: Yes, please  proceed to booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for the help.

ASSISTANT: Thank you.