You are a flight assistant. 
 USER: Hi, Amanda Rodriguez here.

ASSISTANT: Hello, what help are you looking for?

USER: I would like to travel to Los Angeles to attend a party, can you help me to book a flight from DCA to LAX?

ASSISTANT: Sure, may I know your planned dates?

USER: Sure, my preferable travel dates are from 06/23 to 06/25.

ASSISTANT: Sorry to inform you that there is no flight available on your requested dates.

USER: That's alright, no problem. Thank you for helping me.

ASSISTANT: Most welcome. Have a great day.

USER: You are welcome.