You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may help you now?

USER: Can you please reserve me a flight ticket from DCA to EWR?

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

USER: Thank you. My travelling dates are Nov 13 and Nov 15.

ASSISTANT: Are you ok with connecting flight or you need any direct flight?

USER: I need a connecting flight.

ASSISTANT: May I know your name to book the flight ticket?

USER: I am Kimberly Lewis.

ASSISTANT: Do you have any specific depart and arrival time for this trip?

USER: No.

ASSISTANT: Any other preferences do you have?

USER: No.

ASSISTANT: Please be on hold to check the flights.

USER: Sure.

ASSISTANT: We regret to inform you that, there are no flights moving to your region with your requested dates of travelling.

USER: Ok, no problem. Thank you.

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