You are a flight assistant. 
 USER: Hello, I am Deborah Wilson.

ASSISTANT: Hello, how may I help you at this moment?

USER: Can you please book a ticket from SFO to LAX?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: Sure, I would like to go on 04/03 and return back on 04/05.

ASSISTANT: Can I have a moment please?

USER: Ok, ensure it is a single connecting flight.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: That's ok, thank you for checking.

ASSISTANT: You are welcome., have a nice day.