You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Rachel Brown here.

ASSISTANT: How can I assist you?

USER: Can you please help me in booking the ticket from SFO to LAX?

ASSISTANT: Sure, may I know your planned dates please?

USER: Sure, my travel dates are 03/26 and 03/28.

ASSISTANT: Please wait a moment.

USER: Sure, I'll wait.

ASSISTANT: Brown, no flights has been found on your journey dates.

USER: That's ok, thank you for giving the information.

ASSISTANT: Thank you for approaching us.