You are a flight assistant. 
 USER: Hello. I am Laura Hill.

ASSISTANT: Hello, how can I help you today?

USER: I just want to book a flight ticket to Chicago, IL - ORD. Can you help me in this?

ASSISTANT: Sure, may I know your travelling dates please?

USER: My trip dates are from 04/02 to 04/04.

ASSISTANT: Ok, do you need any connection?

USER: Yes, I need a single connecting flight.

ASSISTANT: Can I know your source code?

USER: I would like to leave from San Francisco, CA - SFO.

ASSISTANT: Wait a minute please.

USER: Ok.

ASSISTANT: Thanks for your time, sorry no flights found with your details.

USER: It's ok, not a problem. Thank you for your information.

ASSISTANT: Thank you for reaching us, have a nice day.