You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I am planning to visit EWR with my family. Can you book a flight from DEN?

ASSISTANT: Sure, may I know your planned travel dates?

USER: I will travel on Apr 30 and return on May 2.

ASSISTANT: Do you have any requirements?

USER: I want my return flight in evening.

ASSISTANT: May I know your name?

USER: I prefer a connecting flight. My name is Susan Baker.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Sorry, there were no flights found on your route.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for reaching us.