You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I will be travelling to Phoenix PHX from Denver DEN for my weekend, please help me.

ASSISTANT: Sure, I can help you with that. Can you please let me know your travel dates for booking flight ticket?

USER: I will be starting on 04/23 and my returning date will be on 04/25.

ASSISTANT: May I know your name for further process?

USER: Sure, myself Thomas Lee.

ASSISTANT: Ok, please wait a moment.

USER: Ok, sure.

ASSISTANT: There is a flight available your requested dates, airline is Delta and flight number is 1001. Shall I confirm this flight ticket for you?

USER: You can proceed with booking.

ASSISTANT: Your flight ticket is booked successfully.

USER: Thank you for booking my reservation.

ASSISTANT: You are welcome.