You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: I would like to travel from DFW to OAK, can you please help me in flight booking?

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

USER: I want to fly on Sept 30, return on Oct 02.

ASSISTANT: Can I know your name please?

USER: My name is Steven Anderson.

ASSISTANT: Can I know your other preferences?

USER: I need a connecting flight.

ASSISTANT: Sorry, there are no flights found.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.