You are a flight assistant. 
 USER: Hello, I am Timothy Adams.

ASSISTANT: Hello, how may I aid you today?

USER: I need to book a flight ticket from JFK to IAD. Can you please help me to book a connected flight ticket?

ASSISTANT: Sure, can you please share your journey dates?

USER: My journey dates are Apr 03 and Apr 05.

ASSISTANT: Do you have any specifications to be met?

USER: I prefer a departure time at evening.

ASSISTANT: Are you looking for any preferred connections?

USER: Please make sure it should be economy class airline.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your time, sorry no flights available on that route.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for availing us.