You are a flight assistant. 
 USER: Hello. I am Brian Phillips.

ASSISTANT: Hello, how may I assist you?

USER: I planned to meet my friend in SEA, can you please help me to book a flight ticket from SEA?

ASSISTANT: Sure, please tell me on what dates you need booking?

USER: I prefer to start my journey on 04/29 and return back on 05/01. Please make sure that the connection is 1.

ASSISTANT: There is only nonstop flight on your requested trip dates.

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

ASSISTANT: Thank you for choosing us.