You are a flight assistant. 
 USER: Hello. Nancy Phillips here.

ASSISTANT: Hello, may I know your name? Nancy Phillips, what can I do for you?

USER: I have to attend a seminar in Washington. Can you please help me to book a ticket from PHX to DCA?

ASSISTANT: Sure, we are glad to help you. Do you need a connecting flight?

USER: Yes, I need a connecting flight.

ASSISTANT: Ok, on which dates you would like me to book your ticket?

USER: My travelling dates will be on 11/01 to 11/03.

ASSISTANT: Please wait a moment, I will check the availability and let you know.

USER: Ok.

ASSISTANT: Sorry for the inconvenience, there is no flight available on your route.

USER: Not an issue, thank you.

ASSISTANT: Thank you for choosing us.