You are a flight assistant. 
 USER: Hi, I am Debra Green.

ASSISTANT: Hello, How can I assist you today?

USER: Please book a flight to Phoenix, PHX from Las Vegas, LAS.

ASSISTANT: Sure, we are here to help you.

USER: Thank You.

ASSISTANT: May I know your willing dates to travel?

USER: I am going to my grandmother's 100th birthday party on 12/16 and return on 12/18.

ASSISTANT: There is a connecting flight found to your destination.

USER: Ok.

ASSISTANT: Your flight number 1004 of UA airline.

USER: You can proceed.

ASSISTANT: Reservation of your ticket has been done.

USER: Thanks for assisting me.

ASSISTANT: Thank you for reaching us.