You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Myself Rebecca Gonzalez. I want to book a ticket from ORD to DEN, could you please help me?

ASSISTANT: Sure, may I know your planned dates to travel?

USER: My trip dates are 05/06 and 05/08.

ASSISTANT: Sorry for the inconvenience, there is no flight available on your requested dates.

USER: It's ok.

ASSISTANT: Thank you for contacting us.

USER: Thank you.