You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you help me to book a flight from Denver to New York?

ASSISTANT: Sure, please share me your airport codes?

USER: My airport codes are DEN and EWR.

ASSISTANT: Please mention your planned journey dates?

USER: My journey dates are May 20 and 22.

ASSISTANT: Do you want a connecting flight?

USER: I need a break in my journey.

ASSISTANT: Do you have any other requirement?

USER: No.

ASSISTANT: May I know your name?

USER: Dennis Adams here.

ASSISTANT: Thank you for the details, sorry there is no reservation found on your name in our system data.

USER: Ok, thank you.

ASSISTANT: Thank you for visiting us, we hope see you again.