You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Jack Allen.

ASSISTANT: How can I guide you?

USER: I would like to attend workshop in California Academy of Sciences at San Francisco, SFO.

ASSISTANT: Ok.

USER: Can you help me out?

ASSISTANT: Sure. May I know your source code?

USER: My origin airport code is New York, NY - LGA.

ASSISTANT: Help me with your travelling dates.

USER: I will start my journey on 08/16. I will return on 08/18.

ASSISTANT: Please, wait.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no flights found on your route.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for choosing us.