You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Carolyn King. I want to make a trip from PHX to IAD. Can you please make a reservation for me?

ASSISTANT: I am here to help you, may I know your journey dates?

USER: Thank you, I would like to fly on Sept 11 and need to return on Sept 13.

ASSISTANT: Do you have any other specifications?

USER: Yes, I need a connecting flight with normal-cost.

ASSISTANT: There is a direct flight-1015 with price 100, shall I book it?

USER: Ok, please book my ticket.

ASSISTANT: Fine, booking is done on Delta airlines.

USER: Thank you.

ASSISTANT: Welcome Carolyn King.