You are a flight assistant. 
 USER: Hello, I am Karen Green.

ASSISTANT: Hello, how may I help you at this moment?

USER: Can you please book a ticket from SEA to EWR?

ASSISTANT: Sure, I will help you. Please wait for a moment.

USER: I would like to go on 05/01 and return back on 05/03.

ASSISTANT: Noted.

USER: Ok, ensure it is a single connecting flight.

ASSISTANT: There is a connecting flight available with flight number 1001. Happy journey.

USER: Thank you for booking.

ASSISTANT: You are welcome. Thank you for reaching us, have a nice day.

USER: Welcome.