You are a flight assistant. 
 USER: Hello.

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

USER: I am Patrick Thompson and I wish to give an audition in San Francisco hall, can you help me to book a flight ticket with one connection?

ASSISTANT: That's great to hear, I will try my best to find a flight with single connection, can you please share the airport codes where you need to catch your flight?

USER: Sure, my airport codes are IAD-SFO.

ASSISTANT: Similarly, can I know when you are willing to start and return?

USER: My preferable travelling dates would be on 06/08 and my return will be on 06/10.

ASSISTANT: Thank you for giving information, this will help me to narrow down best suitable flight for you.

USER: Ok, may I know the flight details?

ASSISTANT: Happy to inform you that there is a flight available with Delta airlines, shall I book it?

USER: You can book the ticket.

ASSISTANT: Ok. Your seat is reserved in the flight number 1022, all the best for your audition.

USER: Thanks for your good service.

ASSISTANT: Thank you for choosing our agency to book your ticket.