You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I serve you today?

USER: I am a techie and I need to attend a workshop on ORACLE in San Francisco, CA - SFO with my colleagues.

ASSISTANT: Sure.

USER: Will you help me in booking a flight ticket on 11/04?

ASSISTANT: Sure, I will help you.

USER: Thanks.

ASSISTANT: Can I know your price limit?

USER: My price limit is 200.

ASSISTANT: When do you want to return back?

USER: I intend to return on 11/06.

ASSISTANT: Could you let us know your source code?

USER: My origin airport is Houston, TX - HOU.

ASSISTANT: May I know your name?

USER: My name is Laura Wilson.

ASSISTANT: Sorry, Laura we could find any flights  to your destination point.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you.