You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I would like to book a ticket from SEA to EWR.

ASSISTANT: May I know your travelling dates?

USER: My travelling dates are from Jan, 18 to Jan, 20.

ASSISTANT: Do you prefer connecting flight?

USER: I prefer connecting flight.

ASSISTANT: Do you have any other specifications?

USER: I prefer business class.

ASSISTANT: May I know your good name?

USER: I am Ashley Anderson.

ASSISTANT: Sorry, we found no flights on your travelling dates.

USER: Thanks.

ASSISTANT: Thank you for choosing us.