You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you now?

USER: I would like to travel from ORD to LGA. Can you please help me?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your travel dates, please?

USER: My travel dates are from 02/04 to 02/06.

ASSISTANT: Let me know your connection limit, please.

USER: My connection limit is 1.

ASSISTANT: May I know your class preference?

USER: My class preference is economy class.

ASSISTANT: Do you have any more specifications?

USER: No, thanks.

ASSISTANT: may I know your name to proceed?

USER: Myself Raymond Green.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Sorry, no flights were found on your desired routes.

USER: It's ok, thank you.

ASSISTANT: Thank you for reaching us, have a good day.