You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Timothy Johnson. I would like to travel from ORD to EWR. Can you please help me to book a ticket?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My travelling dates will be on May 23 to May 25.

ASSISTANT: Do you need any specifications?

USER: I want to return in the evening. I need a connecting flight.

ASSISTANT: Sorry, there are no flights found.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for reaching us.