You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Brandon King.

ASSISTANT: How may I assist you?

USER: I want to travel from IAD to PHX. Can you help me to book a flight ticket?

ASSISTANT: Ok, can I have your journey dates too?

USER: I want to travel in the flight on 01/02 and 01/04.

ASSISTANT: There is a connecting flight-1020 on Delta airlines, would you like me to proceed?

USER: Proceed to booking.

ASSISTANT: Ok, booking is done with your preferences.

USER: Thank you for your help.

ASSISTANT: Thanks for approaching us.