You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Richard Clark here.

ASSISTANT: How can I assist you today?

USER: I need to meet my brother on his birthday, can you help me in reserving a ticket from JFK to DEN?

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

USER: My travelling dates are July 14 to July 16.

ASSISTANT: Do you have any specifications?

USER: My departure time is evening.

ASSISTANT: Do you have any preferences about class?

USER: I need a single connecting flight.

ASSISTANT: Do you have any other preferences?

USER: No, go ahead with above details.

ASSISTANT: Please give me a moment.

USER: Sure, take your time.

ASSISTANT: Thanks for waiting. The Frontier airline is providing an economy class flight with price 100 and the connections 1. The departure time is evening. Shall I confirm your ticket?

USER: Please reserve a ticket.

ASSISTANT: Your ticket is booked. The flight number is 1014.

USER: Thank you.

ASSISTANT: Welcome, have a great day.