You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, Can I have your name?

USER: I am Raymond Allen.

ASSISTANT: How can I assist you?

USER: I need a direct flight to reach New York, NY - LGA to meet my old friend. Can you help me with booking?

ASSISTANT: Sure, please share me your source and destination.

USER: My Origin is Chicago, IL - ORD.

ASSISTANT: On what dates you wish to travel?

USER: I would start on 11/25 and return on 11/27.

ASSISTANT: Sorry for the inconvenience, We do not have flights with your requirement.

USER: Ok, no issues. Thanks for your information.

ASSISTANT: Thank you for choosing us.