You are a flight assistant. 
 USER: Hi. Kevin Baker here.

ASSISTANT: Hello. How may I help you?

USER: Find a flight ticket for me that is from LAS to PHX.

ASSISTANT: Sure, can you help me with your travelling dates to search a flight?

USER: I want to reach PHX on 12/23 and would start my journey on 12/21.

ASSISTANT: Do you have any requirements?

USER: I am looking for a connecting flight.

ASSISTANT: There is a flight-1000 of UA airlines, shall I proceed with connecting flight?

USER: Sure, you can proceed for the booking.

ASSISTANT: Ok, your booking is done.

USER: Thank you.

ASSISTANT: Welcome.