You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be at your service today?

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

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: I would like to travel on June 19 and return back on June 21.

ASSISTANT: Do you have any other specifications?

USER: I am looking for a connecting flight.

ASSISTANT: Please help me with your name for booking.

USER: My name is Gregory Wright.

ASSISTANT: Sorry for this inconvenience, I could not find any flight with your requirements.

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

ASSISTANT: Thank you for reaching us.