You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you now?

USER: Can you book a flight ticket from LAX to ORD?

ASSISTANT: Sure, I will help you with booking. May I know your good name?

USER: My name is Mark Edwards.

ASSISTANT: Please share me on which dates would you like to travel?

USER: I will start on May, 9 and return on May, 11.

ASSISTANT: Please help me with your class preference?

USER: I am comfortable with any class.

ASSISTANT: Do you want a connecting flight?

USER: Yes.

ASSISTANT: Is there any other requirement?

USER: I need to depart as well as return at afternoon time only.

ASSISTANT: Please wait for a while and let me check the flight availability.

USER: Sure.

ASSISTANT: Thank you for the details, sorry there is no flight available on your given journey dates.

USER: That's ok, thank you for the information.

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