You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am Margaret Garcia. I am looking for a flight from CLT to DEn, can you please help me?

ASSISTANT: Sure, I will help you in booking, please share your travelling dates?

USER: My trip dates are from 11/29 till 12/01.

ASSISTANT: Sorry, no flights as per your details.

USER: It,s ok, thank you for checking.

ASSISTANT: Thank you for reaching us.