You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Charles Davis here. I would like to book a ticket from PHL to DTW, can you please help me with that?

ASSISTANT: Yes, I can help you. Can you share me your travelling dates?

USER: The travel dates are from 02/20 to 02/22.

ASSISTANT: Give me a moment.

USER: Ok.

ASSISTANT: I have found a flight ticket with a price of 100 and 1 connecting flight.

USER: Please proceed booking.

ASSISTANT: Ok, your ticket is booked.

USER: Thank you for helping me.

ASSISTANT: Thank you for contacting us.