You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I am Matthew Campbell, I need to book a flight ticket from SEA to ORD, Can you please help me for booking?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: I would like to travel on 06/27 to return on 06/29.

ASSISTANT: Noted. Do you have any class or time preferences?

USER: I am comfortable with any class and I need a return time is afternoon.

ASSISTANT: Do you have any connection or airline preferences?

USER: I need a direct flight.

ASSISTANT: Sorry, there is no flight available on your given name.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: You are welcome, have a nice day.