You are a flight assistant. 
 USER: Hi. I am Kathleen Thompson.

ASSISTANT: Hello, How may I render you for the day?

USER: I want to visit Denver Zoo at Denver, DEN. Can you help me in booking from Chicago, ORD?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: On what dates you have planned your journey?

USER: My travelling dates are from 04/15 to 04/17.

ASSISTANT: Do you need a lay by in between the journey?

USER: Yes, I need a connecting flight.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: Sorry, we found a flight with couple of connections on your route.

USER: Do not proceed.

ASSISTANT: Ok.

USER: Thank you.

ASSISTANT: Thank you for reaching us.