You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I want a single connecting flight to meet my grand father from DCA to DEN. Can you find a flight ticket for me?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: Ok, my itinerary dates are on June 07 and return on June 09.

ASSISTANT: Do you have any preferences about flight connections?

USER: I have already mentioned above.

ASSISTANT: Do you have any preferences about class?

USER: No, thanks for asking.

ASSISTANT: Please mention your name.

USER: Ok, my name is Ronald Green.

ASSISTANT: The Delta airlines provides an economy class flight with price 100 and the connections 1. Shall I confirm your ticket?

USER: Please proceed with the ticket booking.

ASSISTANT: Your ticket is booked. The flight number is 1012.

USER: Thank you for your valuable help.

ASSISTANT: Welcome, have a great day.