You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please book a flight from EWR to BOS?

ASSISTANT: Sure, help me with the trip dates?

USER: Sure, I want to depart on Jan 10 and need to return on Jan 12.

ASSISTANT: Do you have any preferences?

USER: Yes, I need a connecting flight which departs in the evening time and return in the afternoon time.

ASSISTANT: May I know your name please?

USER: My name is Katherine Carter.

ASSISTANT: Sorry, no flights were running in your preferred dates.

USER: Ok, not an issue. Thank you for the information.

ASSISTANT: Thank you for reaching us.