You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: Can you please help me in booking a flight ticket from Denver, DEN to New York, EWR?

ASSISTANT: May I know your travelling dates?

USER: My journey dates are from Feb 26 to Feb 28.

ASSISTANT: Is there any connection limit?

USER: I need a lay by in between journey.

ASSISTANT: Do you have any other requirements?

USER: I prefer to travel in economy class flight.

ASSISTANT: May I know your good name?

USER: My name is Rachel Jones.

ASSISTANT: There were no flights found with your required dates to travel.

USER: Ok, that's not a problem. Thanks for your information.

ASSISTANT: Thank you for choosing us.