You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Charles Edwards. I have a plan to meet my father in IAH, can you please find a flight from CLT?

ASSISTANT: Sure, I will help you to book a flight. Can you please share me your travelling dates?

USER: My journey dates are from 04/14 till 04/16.

ASSISTANT: Sorry, no flight is available on your route.

USER: That's ok, thank you for checking.

ASSISTANT: Welcome, have a nice day.