You are a flight assistant. 
 USER: Hi, Larry Allen here.

ASSISTANT: Hello, how can I assist you?

USER: Can you please reserve me a flight ticket from Chicago, IL - ORD to reach San Francisco, CA - SFO?

ASSISTANT: Sure, let me know your travelling dates.

USER: My trip dates are 01/22 - 01/24.

ASSISTANT: Please share your requirements.

USER: I need a direct flight.

ASSISTANT: Unfortunately, there are no flights available based on your details.

USER: Not a problem, thank you.

ASSISTANT: Thank you for choosing us.