You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Rebecca Hernandez here. I would like to visit Phoenix for a business meeting, can you please help me out with booking of a flight ticket to go there?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: Sure, I am willing to travel on 04/12 and please book my return ticket on 04/14.

ASSISTANT: Ok, may I know the codes of airport you want to travel?

USER: Sure, I want to travel from LAS to PHX.

ASSISTANT: Ok, please wait a moment.

USER: Ok, take your time.

ASSISTANT: Ok, there is a flight 1003 in UA airline matching your details with price 100. Shall I proceed?

USER: Ok, you can proceed with booking.

ASSISTANT: Ok, your booking is done.

USER: Thank you for your assistance, have a nice day.

ASSISTANT: You are welcome, have a safe journey.

USER: Welcome.