You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I need to reserve a ticket from JFK to IAD, can you help me in doing that?

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

USER: My trip dates are Jan 30 to Feb 01.

ASSISTANT: Do you have any preferences about class?

USER: No.

ASSISTANT: Do you have any limits about flight connections?

USER: I need a single connecting flight.

ASSISTANT: Please mention your name.

USER: Margaret Lopez here.

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

USER: If depart time is in evening. Please proceed.

ASSISTANT: There is a flight provided by United airlines having economy class with price 300 and connections 1. The departure time is evening. Shall I confirm your ticket?

USER: Ok, please proceed.

ASSISTANT: Your ticket is booked. The flight number is 1011. Thanks for reaching us, have a great day.

USER: Thank you.