You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: Myself Anna Lee. I am looking for a flight from SEA to IAD, can you help me in booking?

ASSISTANT: Sure, I will help you with that. May I know your travelling dates, please?

USER: Sure, my planned travel dates are Apr 28 and Apr 30.

ASSISTANT: Do you have any airline preference?

USER: No, I don't need any airline preferences.

ASSISTANT: May I know your connection limit?

USER: Sure, please look for the connecting flight.

ASSISTANT: Do you have any other specifications?

USER: I would like to return my journey for the evening flight.

ASSISTANT: There are no flights found on this route as per your travel dates.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.