You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Carolyn Miller.

ASSISTANT: How may i assist you?

USER: I would like to travel from 12/25 to 12/27.

ASSISTANT: Can you share your airport codes?

USER: I would like to depart from ORD to MCO.

ASSISTANT: There is no flight on this route.

USER: That's ok. Thank you for your time.

ASSISTANT: Most welcome.