You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I amend you?

USER: I am Eric Williams. I am a techie and I need to attend a workshop on ORACLE in San Francisco, SFO with my colleagues. Can you please reserve a  ticket on 12/01 and 12/03?

ASSISTANT: Sure, we are blissful to help you.

USER: Thank you.

ASSISTANT: May I know your nearest airport code?

USER: My boarding point is Washington , IAD.

ASSISTANT: Ok, do you have any preferences?

USER: I need a connecting flight.

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

USER: Ok, no issue. Thank you.

ASSISTANT: Thank you for opting us.