You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am planning to attend a business meeting in DEN, can you help me in booking a flight ticket from EWR?

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

USER: I want to fly on July 01 and return on July 03.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Sorry, there is a no flight available on your requested dates.

USER: Not an issue.

ASSISTANT: May I know your good name please?

USER: Thank you. I am Rebecca Hernandez.

ASSISTANT: Thank you.