You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Please help me in booking my flight ticket from Boston, I am willing to visit SEA.

ASSISTANT: Ok, may I know your planned trip dates?

USER: My trip daters are Aug 04 and Aug 06.

ASSISTANT: May I know your connection preference?

USER: I need connecting flight.

ASSISTANT: May I know your good name?

USER: Myself Betty Evans.

ASSISTANT: I am very sorry to inform you, there are no flights available for your journey.

USER: Ok, thanks for your information.

ASSISTANT: Thank you for choosing us.

USER: You are welcome.

ASSISTANT: Have a nice day.