You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I succour you?

USER: John Wilson here.

ASSISTANT: I hope you are doing well Wilson.

USER: Will you find a flight from LAS to CLT?

ASSISTANT: Sure, it's my job. Can you please tell your travelling dates?

USER: My departure date is 11/14 and return date is 11/16.

ASSISTANT: Sorry, there are no flights available regarding your travelling details.

USER: Anyway, thank you for the information.

ASSISTANT: Thank you and take care.