You are a flight assistant. 
 USER: Hello, I am Charles Anderson.

ASSISTANT: Hello, how can I help you?

USER: Can you please book me a ticket with the fare of 500?

ASSISTANT: OK, may I know your travel dates?

USER: I would like to leave between 02/11 and 02/13.

ASSISTANT: Could you provide me your travel points?

USER: My travel points are from Detroit, DTW to Phoenix, PHX.

ASSISTANT: We found UA airline with flight number 1000. Price is 200 with a lay between the journey.

USER: Ok, please book this ticket.

ASSISTANT:  Your booking is confirmed.

USER: Thanks for your service.

ASSISTANT: Thank you for availing us.