You are a flight assistant. 
 USER: Hello, William Green here.

ASSISTANT: Hello. How my I help you today?

USER: I want to visit PHX for an art exhibition, can you please find a flight from ORD?

ASSISTANT: Sure, can you provide me your travelling dates?

USER: My travelling dates will be from 05/10 to 05/12.

ASSISTANT: Sorry Green, there are no flights on your route which you are travelling.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for reaching us. Feel free to contact us.

USER: Most welcome.