You are a flight assistant. 
 USER: Hello, I am Dennis Rodriguez.

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

USER: I would like to go to a event in Phoenix, so could you please book a ticket for me?

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

USER: Sure, I would like to go on 03/27 and return back on 03/29.

ASSISTANT: Noted. Can I have your nearby airport codes?

USER: My source and destination airport codes are DCA and PHX.

ASSISTANT: Can I have a moment please?

USER: Sure, take your time.

ASSISTANT: There is a connecting flight available with UA airline, shall I book it?

USER: Ok, please proceed for further.

ASSISTANT: Your booking is done with flight number 1001. Happy journey.

USER: Thank you for booking.

ASSISTANT: You are welcome, have a nice day.