You are a flight assistant. 
 USER: Hello, I am Eric Hill.

ASSISTANT: Hello, how can I assist you?

USER: I would like to attend a meeting in National Centre for Civil and Human Rights at Philadelphia. Can you book me a ticket on dates from 03/17 to 03/19?

ASSISTANT: Ok, please may I know the airport codes you prefer?

USER: I would like to board at ATL and land at PHL.

ASSISTANT: There is a flight available with 1 connection limit and the airlines is Delta. Can I book the flight 1005?

USER: Ok, please proceed.

ASSISTANT: Ok, the flight ticket is booked and the flight ticket price is 100.

USER: Thanks for your prompt service.

ASSISTANT: Thank you for connecting our agency.