You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you please help me to book a flight from PHX to SFO?

ASSISTANT: Please provide your travelling dates?

USER: Sure, I want to travel on Sept 22 and need to return on Sept 24.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight.

ASSISTANT: Direct flight is found with Frontier airlines for price 200. Shall I book a ticket?

USER: Ok, please proceed for booking.

ASSISTANT: Let me know your name?

USER: I am Jonathan Evans.

ASSISTANT: Ticket is booked having flight number 1000.

USER: Thank you.

ASSISTANT: Thank you.