You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. In which way I can aid you today?

USER: I need to book a flight ticket from DEN to EWR to meet my wife.

ASSISTANT: Sure, I will aid you with that. Can you please mention your preferable travel dates?

USER: Sure, my travelling dates are Nov 10 and Nov 12.

ASSISTANT: May I know your name for further process?

USER: My name is Amy Garcia.

ASSISTANT: Is there any additional preferences do you have?

USER: I want to return in the afternoon.

ASSISTANT: Ok, please hold on a moment.

USER: Sure.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for reaching us.