You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: Can you please help me in booking a flight ticket from DEN to DFW?

ASSISTANT: Sure, May I know the journey dates?

USER: I would like to fly on Feb 15 and return on Feb 17.

ASSISTANT: Do you have any connection limit?

USER: I need a single connection.

ASSISTANT: Is there any other requirements?

USER: No.

ASSISTANT: May I know your name?

USER: Myself Stephanie Wilson.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for opting us.