You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: I am Anthony Thomas. I want to reserve a flight ticket to IAD for attend an small meeting over there. Can you please help me to book a flight ticket from EWR?

ASSISTANT: Sure, I will help you in booking the ticket.

USER: Thank you.

ASSISTANT: May I know your travelling dates too?

USER: Sure, my travelling dates are 03/22 and 03/24.

ASSISTANT: Sorry, there are no flights found in our database.

USER: Not an issue, anyway thank you for the help.

ASSISTANT: Thank you for choosing us.