You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Ashley Baker. I need to book a flight ticket from LAX to DFW, Can you please help me for booking?

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

USER: I would like to travel on 05/12 to 05/14.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to say, no flight is available for you.

USER: Ok, no problem. Thanks for your information.

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