You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am Deborah Wright. Can you help me in booking a flight ticket from SEA to EWR?

ASSISTANT: May I know your desired travel dates please?

USER: My travelling dates are from Jan 4 to Jan 6.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: Sorry to say, there is no flight on your desired travel dates.

USER: Ok, No problem. Thank you.

ASSISTANT: Thank you for opting us.