You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Will you please assist me in booking a flight ticket from SEA to IAD?

ASSISTANT: Sure, I am here to help you in booking. Can you please share your travel dates?

USER: My planned journey dates are from Feb 22 to Feb 24.

ASSISTANT: Ok, may I know your name?

USER:  I am Joseph Moore.

ASSISTANT: Do you have any specification?

USER: I prefer a flight having maximum connection of one.

ASSISTANT: Sorry, no flights are available on your preferable travel dates.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.