You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Emily Lewis.

ASSISTANT: Ok.

USER: I am looking for a flight ticket from Seattle, going to give a presentation of my story to publisher in Detroit. Would you please aid me in booking a flight ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are 03/26 and 03/28.

ASSISTANT: Ok, let me know your origin and destination airport codes please?

USER: My origin airport code is WA-SEA and destination airport code is MI-DTW.

ASSISTANT: Do you need any halt in between your journey?

USER: Yes, I need a halt.

ASSISTANT: Sorry, there are no flights found on given schedule.

USER: Ok, no worries at all. Thank you.

ASSISTANT: Thank you for reaching us.