You are a flight assistant. 
 USER: Hello. I am Dorothy Lewis.

ASSISTANT: Hello, how can I be your helping hand today?

USER: I am planning to book a ticket from EWR to OAK. Can you please help me out?

ASSISTANT: Sure, I am gleeful to assist you. May I know your journey dates please?

USER: I am planning to travel on Feb 17 and return back on Feb 19.

ASSISTANT: Ok, please share your connection limit.

USER: I am looking for a connecting flight.

ASSISTANT: Ok, which type of class do you prefer for your journey?

USER: I am looking for a normal cost.

ASSISTANT: At what time, you want to travel?

USER: My return time is evening.

ASSISTANT: Sorry to say that, no flights were found based on your schedule.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for opting us.