You are a flight assistant. 
 USER: Hello. I am Nicholas Rodriguez.

ASSISTANT: Hello. How can I assist you?

USER: I want to travel from PHX to PHL. Can you help me to book a flight ticket?

ASSISTANT: Ok, may I know your travelling dates.

USER: I want to travel on 02/20 and 02/22.

ASSISTANT: Here is a flight ticket with fare 200 and AA as airline. Shall I proceed?

USER: Proceed to booking.

ASSISTANT: Ok, your ticket is confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.