You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: Can you please help me to book a ticket from ORD to LGA?

ASSISTANT: When you are willing to travel?

USER: I want to start on Aug 31 and return on Sept 1.

ASSISTANT: Do you have any class preference?

USER: Sorry, my return journey date will be on Sept 2. No, I would prefer normal-cost airlines.

ASSISTANT: Let me know your connection limit.

USER: I need a connecting flight.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May, I know your good name?

USER: Laura Turner here.

ASSISTANT: Sorry, we found no flight on your given dates.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.