You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am looking to go to my uncle's home. Can you please help me in ticket booking from DEN to BOS?

ASSISTANT: Sure, I will help you. May I know your planned travel dates please?

USER: My travel dates are from Sept 13 to Sept 15.

ASSISTANT: May I know your name please?

USER: Myself Thomas Scott.

ASSISTANT: Do you need a connection limit?

USER: I want a single connecting flight.

ASSISTANT: Do you have any other specifications?

USER: Yes, I want to book my ticket in economy class.

ASSISTANT: Please hold on a moment.

USER: Ok.

ASSISTANT: Thomas Scott, no flights has been found on your planned travel dates.

USER: It's ok, thank you.

ASSISTANT: Thank you for approaching us.