You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me in booking from ORD to LGA?

ASSISTANT: Sure, please share your planned travel dates?

USER: My travelling dates are from Mar 25 to Mar 27.

ASSISTANT: Let me know your connection limit?

USER: I need a direct flight.

ASSISTANT: Any other preferences?

USER: My depart time is evening.

ASSISTANT: Can I have your name please?

USER: My name is Scott Walker.

ASSISTANT: Sorry, no flights found with your given dates.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you for opting us.