You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I am Debra Carter. I want to book a ticket from LAX to SFO, can you help me?

ASSISTANT: I am here to help you with your flight ticket booking Carter. Can you please provide the scheduled dates of your journey?

USER: My travel dates are 09/09 and 09/11.

ASSISTANT: Sorry, no flights available in our route as per your given travel dates.

USER: No problem, thanks for checking.

ASSISTANT: You are welcome, thank you for reaching us, have a nice day.