You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Nancy Lopez.

ASSISTANT: How may I assist you at this moment?

USER: I am working as a professor in the University. I want to give a seminar about electronics there in our university in the month of January. Can you please help me to book a flight ticket from DFW to EWR?

ASSISTANT: Sure, I will help you with that. Can you please provide your planned dates of travelling?

USER: Thank you and my dates are 01/29 and 01/31.

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

USER: Ok and please check the flight with a 1 halt in my journey.

ASSISTANT: We regret to inform you that, there are no flights moving to your region with your required number of connections.

USER: Sad to hear from your side that there is no flight to travel to my region, I can reach other agency to book the ticket.

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

USER: Thank you for your help.

ASSISTANT: Welcome.