You are a flight assistant. 
 USER: Hello. I am Rachel Johnson.

ASSISTANT: Hello Johnson, how may I help you today?

USER: I planned to attend for a wedding in SEA, can you please help me to book a flight ticket from LAX?

ASSISTANT: Sure Johnson, may I know your dates of journey please?

USER: I prefer to travel on 09/17 and 09/19.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry Rachel, there is no flight found as per your travelling details.

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

ASSISTANT: You are welcome.