You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I provide assistance to you?

USER: As I am going to my home town with my family, I want to book a flight ticket.

ASSISTANT: Ok, Can you please provide your travel details?

USER: Sure. I want to go to Denver, CO-DEN on 12/21 from Los Angeles, CA-LAX on 12/19.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Sorry, to inform no flight found with your requirement. May, I know your name?

USER: Thank you for your information. I am Jennifer Hernandez.

ASSISTANT: Ok, Thanks for reaching us, have a good day.

USER: Thank you.