You are a flight assistant. 
 USER: Hello. I am Karen Hall.

ASSISTANT: Hello, how may I aid you today?

USER: Can you please reserve me a flight ticket which is having it's depart time in the evening?

ASSISTANT: Sure, can you please share me with your dates of journey?

USER: I have planned to travel on Aug 30th and return on Sept 01st.

ASSISTANT: Ok, may I know your airports codes of journey please?

USER: I would like to travel from PHL to DFW.

ASSISTANT: Do you have any other specifications please?

USER: I prefer connecting flight.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: I found a flight with the connecting flight of fare 300 with Southwest airline, are you ok with this booking?

USER: Ok, please book this ticket.

ASSISTANT: Ok, I have reserved your ticket with the flight number 1011.

USER: Thank you.

ASSISTANT: You are welcome, have a great day.