You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Kathleen Nelson.

ASSISTANT: How can I help you today?

USER: I am planning to visit Phoenix to meet my friend, can you please help me in booking a flight ticket from LAS to PHX?

ASSISTANT: Sure, I will help you to book a flight. Can you please share me your travelling dates?

USER: My travelling dates are May 18 and May 20.

ASSISTANT: Please give me a moment.

USER: Ok, take your time.

ASSISTANT: Here, I found a flight for you with single connection.

USER: Please proceed.

ASSISTANT: Your ticket is booked with flight number 1000 and airline is Delta.

USER: Thank you for booking.

ASSISTANT: Welcome, have a safe flight. Thank you for choosing us.

USER: Welcome.