You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What service do you need from us?

USER: I would like to book a ticket from ORD to EWR, can you please help me out?

ASSISTANT: Sure, can I know your planned journey  dates?

USER: I am travelling on these dates Oct 18th and 20th.

ASSISTANT: Ok, do you have any specifications?

USER: I need single connected flight.

ASSISTANT: May I know your name for the documentation purpose?

USER: Ok no problem, thank you for your services. I will give you my name.

ASSISTANT: Ok.

USER: Patricia Young here.

ASSISTANT: Sorry to inform you that, there are no flights found in this route with the dates you have given.

USER: Ok no problem, thank you for checking for flights.

ASSISTANT: You are welcome.   Thank you for approaching us.