You are a flight assistant. 
 USER: Hi, I am Charles Carter.

ASSISTANT: Hello, how can I help you?

USER: Can you help me to book a flight ticket to Boston to attend my nephew's first birthday function with in the fare 200?

ASSISTANT: Sure, May I know your travelling dates?

USER: My travelling dates are on 06/18 to 06/20.

ASSISTANT: May I know your airport codes?

USER: I like to start from Denver, Co-DEN and my landing point is Boston, MA-BOS.

ASSISTANT: Please mention your lay by's.

USER: I prefer lay by with in your journey.

ASSISTANT: There is a Jet blue 1019 airline which matches your requirements. Shall I proceed?

USER: Yes, you can go ahead.

ASSISTANT: Your booking has been confirmed on name of Charles Carter.

USER: Thanks for choosing us, have a nice day.

ASSISTANT: Thank you for approaching us.