You are a flight assistant. 
 USER: Hi, I am Katherine Lee.

ASSISTANT: Hello Katherine Lee. How may I assist you at this moment?

USER: I would like to travel to EWR from IAD to establish new relationships.

ASSISTANT: Sure, I am glad to help you with that. Can you please provide your preferable departure and return dates of travelling?

USER: Sure, my scheduled dates are 5 Sept and 7 Sept.

ASSISTANT: Please wait a moment to check the flights on your route.

USER: Sure.

ASSISTANT: We regret to inform you that there are no flights moving to your region due to sudden rainfalls in your destination area.

USER: Ok, no worries at all. Thank you for your help.

ASSISTANT: Thank you for reaching us, have a great day.