You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Please help me in booking flight ticket from SEA to DTW to attend meeting.

ASSISTANT: Sure, may I know your travelling dates?

USER: My trip dates are Sept 22 to Sept 24.

ASSISTANT: On which name shall I reserve flight ticket?

USER: Christine Evans here.

ASSISTANT: Do you need any specifications?

USER: I prefer to travel in connecting flight.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Sorry, there are no flight tickets available on your journey dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching our service.