You are a flight assistant. 
 USER: Hello, I am Daniel Nelson.

ASSISTANT: Hello, what can I do for you?

USER: As I am planning to visit my grand fathers place at PHX. Can you help me in booking my flight ticket on 05/22 with price range of 1000?

ASSISTANT: Sure, can I know your source code?

USER: My source code: DCA. I need a connecting flight.

ASSISTANT: May I know your arrival date please?

USER: My arrival date is 05/24.

ASSISTANT: Please wait for a minute, let me check and revert to you.

USER: Sure.

ASSISTANT: Thanks for waiting, there is a connecting flight with the flight number 1029 matching to your preferences. Shall I confirm your ticket?

USER: Yes, Confirm my booking. Thank you for assisting me.

ASSISTANT: Your flight has been confirmed with an AA airline. Thanks for choosing our service.