You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Can you help me in booking a flight ticket to DEN from EWR in the month of February for a seminar?

ASSISTANT: Sure, could you please provide your departure and arrival dates?

USER: Thank you for your concern. My departure and arrival dates are Feb 18 and Feb 20.

ASSISTANT: Are you looking for any preferred class?

USER: I am comfortable with any of the class.

ASSISTANT: Do you have any other specifications to be met?

USER: I need a connecting flight for my journey.

ASSISTANT: Kindly mention your name to proceed further?

USER: Sure, my name is Patrick Adams.

ASSISTANT: Ok, please wait a moment.

USER: Sure, I will wait.

ASSISTANT: Thank you for your valuable time, unfortunately no flights available on that route.

USER: Not a problem, anyways thank you for the information.

ASSISTANT: Thank you for approaching us.