You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Robert Thomas.

ASSISTANT: How can I assist you today?

USER: Please book me a ticket from PHX to LAX to meet my family.

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

USER: I have planned to travel on 04/23 and 04/25.

ASSISTANT: Do you have any specifications?

USER: Yes, I prefer economy class.

ASSISTANT: Please give me a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, there is a flight with price 100 and the connections 1 is available. Shall I confirm your ticket?

USER: Yes, please book this ticket.

ASSISTANT: Your ticket is booked with economy class. The flight number is 1009 and the airline is UA.

USER: Thank you.

ASSISTANT: Welcome, have a great day.