You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I serve you?

USER: I am Carolyn Taylor. Can you book a ticket from Denver?

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: May I know your travelling dates?

USER: 02/21-02/23 are the travel dates.

ASSISTANT: Can you share me your airport codes?

USER: To attend the food festival, I need to start from Denver, DEN. New York, LGA is the destination.

ASSISTANT: Do you have any preferences?

USER: I need a connecting flight. Price can be with in 200.

ASSISTANT: There is a flight 1006 in Delta airline and price 100 with a connection. Shall I proceed?

USER: You can proceed to book.

ASSISTANT: Reservation is done.

USER: Thank you.

ASSISTANT: Thank you.