You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Sandra Lewis.

ASSISTANT: How can I aid you today?

USER: Can you please guide me in searching a flight from Charlotte-CLT to EWR?

ASSISTANT: Sure, I am here to help you with that. Could provide me your travelling dates?

USER: Thank you for accepting my request. I want to travel on the dates of 03/16 and 03/18.

ASSISTANT: Sorry to say that, there are no flight's available based on your traveling dates.

USER: Oh! It is so sad to hear from your end. I will choose some other travel agency to reserve my ticket. Anyways thank you for searching the flight availability.

ASSISTANT: Thank you for consulting us.

USER: You are welcome.