You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you today?

USER: I need to travel from OAK to LAS, can you help me in doing a reservation?

ASSISTANT: Sure, may I know your good name?

USER: I am Dorothy Davis.

ASSISTANT: Do you prefer a connecting or direct flight?

USER: I prefer connecting flight.

ASSISTANT: Could you please help me with your journey dates?

USER: My trip dates are Mar 25 to 27.

ASSISTANT: Are there any more specifications?

USER: Please ensure that my return time is afternoon.

ASSISTANT: Sorry, no flights are available as per your requirements.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for reaching us.