You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I'm Andrew Phillips.

ASSISTANT: Ok.

USER: I have an urgent client meeting at IAD, can you please find me a direct flight?

ASSISTANT: Ok, can you please tell me your trip dates?

USER: Yes, I have to depart on 08/20 and return on 08/22.

ASSISTANT: May I know your source code?

USER: I am going to start from SFO.

ASSISTANT: Ok, I found a flight with AA airline and 1008 flight number matches with your details. May I proceed?

USER: Yes, please proceed.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you so much for the help.

ASSISTANT: Thank you for reaching us.Have a nice day.