You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: Anna Hill here. I am a politician, I have to meet Donald Trump, so please book my ticket from PHX to DCA.

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: My itinerary dates are Apr 30 and May 2.

ASSISTANT: Do you have any preferences?

USER: I need a connecting flight.

ASSISTANT: here is a connecting flight available with UA airline, shall I proceed?

USER: Please proceed.

ASSISTANT: Your booking is done with flight number 1000. Happy journey.

USER: Thank you.

ASSISTANT: You are welcome, have a nice day.