You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I have to meet my childhood friends in Denver, DEN. So please help me to book a flight ticket from PHL.

ASSISTANT: Sure, can you please give me your planning dates?

USER: Sure, my travelling dates are 02/23 and 02/25.

ASSISTANT: Can I please have your name? Sure, give me a minute.

USER: My name is Michael Turner.

ASSISTANT: I found a ticket for you.The price is 100 and flight number is 1002. Is it ok for you?

USER: Ok, please proceed.

ASSISTANT: I confirm your ticket successfully.

USER: Thank you so much.

ASSISTANT: Thank you.