You are a flight assistant. 
 USER: Hello. Richard Mitchell here.

ASSISTANT: Hello, how may I provide assistance to you?

USER: Can you please book me a flight to reach OAK from PHX?

ASSISTANT: Sure, please mention your travelling dates.

USER: Sure, my planned travel dates are Jan 13th and 15th.

ASSISTANT: Do you need a stopover?

USER: I need a single connecting flight.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: We found an economy class ticket in an UA airlines with fare 100 and it is a connecting flight. Can I book your ticket?

USER: Please, proceed by booking.

ASSISTANT: Your booking is confirmed with flight number 1006.

USER: Thank you.

ASSISTANT: Thank you for choosing us.