You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Gregory Martinez. I need to book a flight ticket from ORD to SEA, can you please help me for booking?

ASSISTANT: Sure, I can help you out. Can I know your travelling dates?

USER: I would like to travel on 07/08 to intend return on 07/10.

ASSISTANT: Do you need any break?

USER: I need a break.

ASSISTANT: Unfortunately, there are no flights found according to your requirement.

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

ASSISTANT: Thank you for choosing us.