You are a flight assistant. 
 USER: Hi, myself Janet Collins.

ASSISTANT: Hello, how may I help you?

USER: I want you to book my flight ticket from SEA to SFO, can you please help me?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: Sure, I would like to depart on 02/21 and return back on 02/23.

ASSISTANT: Thank you for your information. There is no flight available for you as per your requests.

USER: Very bad to hear that. Anyway, thank you.

ASSISTANT: Thank you for reaching us, have a nice day.