You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I serve you?

USER: I am Emma Clark. I want to open a restaurant at Chicago, IL - ORD. So, Can you help me in my booking?

ASSISTANT: Sure, May I know the source code?

USER: My origin is SFO.

ASSISTANT: Please help me with your travel dates.

USER: My journey dates are from 12/28 to 12/30.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Not an issue.

ASSISTANT: Thank you for availing us.

USER: Thank you.