You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I am Ashley Green. I am planning to travel from JFK to DEN, help me in booking a flight?

ASSISTANT: Sure, I am here to help you. May I know on what dates you are willing to travel?

USER: I like to travel on 11/08 to 11/10.

ASSISTANT: Do you require any stopovers in your journey?

USER: I want to travel in evening.

ASSISTANT: Sorry, there are no flights found on your preferable travel dates.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us.