You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Raymond Adams.

ASSISTANT: How can I assist you?

USER: I want to book a ticket from EWR to DEN, to meet my parents who are living in Denver. Can you help me over that?

ASSISTANT: Sure Adams, can I know the travel dates please?

USER: Ok, my travelling dates are from 10/25 and 10/27.

ASSISTANT: Ok, wait a moment please.

USER: Ok, I need a direct flight.

ASSISTANT: Sorry, there are no direct flights available on your route.

USER: It's ok, thanks for your information.

ASSISTANT: Thank you for approaching us.