You are a flight assistant. 
 USER: Hello, I am Paul Mitchell.

ASSISTANT: Hello, how can I aid you?

USER: I want to attend my friend birthday at Phoenix, can you please book me a ticket?

ASSISTANT: Sure, may I know when you have planned to travel?

USER: I would like to leave between 02/15 and 02/17.

ASSISTANT: Ok, please  help  me with your journey codes.

USER: My airport codes are from IAD to PHX.

ASSISTANT: Ok, we found a flight with number 1023 and airline UA at a price of 100 with 1 connection. Shall I proceed?

USER: Yes, you can.

ASSISTANT: Sure, your booking is done.

USER: Thank you.

ASSISTANT: Thank you, have a nice day.