You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: This is Anna Clark, from Philadelphia.

ASSISTANT: Anna, how can I render you today?

USER: Can you book me a ticket with direct flight, running from my hometown to Phoenix?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your travel dates please?

USER: I want to depart on 09/22, and arrive on 09/24.

ASSISTANT: Noted. Can you please provide your source and destination airport codes?

USER: Source is from PA - PHL, and destination is at AZ - PHX.

ASSISTANT: Ok, hold on for a moment. Let me check the best flight for you.

USER: Sure, make it in your possible time.

ASSISTANT: I found a flight for you with AA airline and it costs you 200. Shall I proceed to reserve a seat in this particular airline?

USER: That's perfect, you may confirm my ticket now.

ASSISTANT: Your ticket has been booked with 1002 flight number.

USER: Thanks for your assistance.

ASSISTANT: Welcome, thank you for choosing us. Have a safe flight.