You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you today?

USER: I am willing to book a flight from SEA to reach DTW, can you please help me in booking a flight?

ASSISTANT: Sure, can you please share your preferable journey dates?

USER: My journey dates are May 21st to 23rd.

ASSISTANT: Is there any other specifications?

USER: I would like to return in afternoon time.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: No issues, thank you.

ASSISTANT: Thank you for reaching us. May I know your name please?

USER: Sure, my name is Jeffrey Johnson.

ASSISTANT: Thank you.