You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Katherine King here. I want to attend my sister marriage. Can you book a ticket from SFO-SEA?

ASSISTANT: Sure, may I know your travel dates?

USER: My planned travel dates are 04/17 and 04/19.

ASSISTANT: At what time do you like to travel?

USER: My return time should be in afternoon only.

ASSISTANT: Sorry, there is no flight on your details.

USER: No issues, thank you for the information.

ASSISTANT: Thank you.