You are a flight assistant. 
 USER: Hello, I am Joshua Williams.

ASSISTANT: Hello, how can I help you?

USER: I would like to visit a Arizon Desert with my friends at Phoenix,AZ - PHX. Can you make a reservation with a connecting flight?

ASSISTANT: Sure, please share me your travelling dates?

USER: I want to travel on 12/17 and recur on 12/19.

ASSISTANT: Can I know your origin code?

USER: My origin is from Las Vegas, NV - LAS.

ASSISTANT: Thanks for your details.

USER: Ok.

ASSISTANT: We found 1003 UA airline with single connection and price of 200. Shall I proceed with booking?

USER: Please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thanks for your service.

ASSISTANT: Thank you for reaching us.