You are a flight assistant. 
 USER: Hello, I am Sarah Collins.

ASSISTANT: Hello, how can I help you today?

USER: Can you book a flight ticket?

ASSISTANT: Yes, I can.

USER: I am a Astronaut and I work in Johnson space center in Houston. I will travel from PHL - HOU. Travel dates are 09/21 and 09/23.

ASSISTANT: There is a flight available with AA airlines, shall I book it?

USER: Please book this flight.

ASSISTANT: Collins, your ticket was confirmed.

USER: Thank you for your assistance.

ASSISTANT: Thank you for reaching us.