You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Can you please help me in booking my flight ticket from DFW to PHX?

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

USER: My trip dates will be May 15th to May 17th.

ASSISTANT: Do you have any specifications about flight connections?

USER: I prefer a connecting flight.

ASSISTANT: Do you have any specifications about class?

USER: No, I am fine with any class.

ASSISTANT: Please mention your name.

USER: I am Helen Clark.

ASSISTANT: The United airlines providing an economy class flight with price 100 and the connections 0. Shall I confirm your ticket?

USER: You can proceed.

ASSISTANT: Your ticket is booked. The flight number is 1000.

USER: Thank you.

ASSISTANT: Welcome, have a great day.