You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what kind of help are you looking from us?

USER: I have a plan to visit Chicago. Can you help me in booking flight ticket from LAX to ORD?

ASSISTANT: Sure, we will help you with that.

USER: Thank you.

ASSISTANT: Can you please let me know your depart and arrival dates?

USER: My trip dates are May 11 to May 13.

ASSISTANT: Do you need any lay by in between your journey?

USER: I need a connecting flight.

ASSISTANT: Is there any airline preference?

USER: I prefer to travel in normal cost airline.

ASSISTANT: Please wait a minute I will check with flights, meanwhile if you any requirements please let me know.

USER: Ok. My depart time should be in the afternoon in economy class.

ASSISTANT: Thanks for providing your details. Sorry to say that there were no flights found on your preferred dates.

USER: Ok, no problem. Thank you.

ASSISTANT: May I know your name for record purpose?

USER: Matthew Gonzalez here.

ASSISTANT: Thank you for reaching us.

USER: Thank you.