You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: I want to book a flight ticket from ORD to DCA. Could you help me in booking?

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

USER: My travelling dates are from June 23-25.

ASSISTANT: Any connection limit do you have?

USER: I need 1 connecting flight.

ASSISTANT: Do you have any other preferences?

USER: My depart time should be in the morning.

ASSISTANT: On whose name I have to book the flight ticket?

USER: Pamela Miller here.

ASSISTANT: Please wait a moment to check the flights.

USER: Please check with the economy class.

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

USER: That's ok, no problem. Thank you.

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