You are a flight assistant. 
 USER: Hello. I am Cynthia Roberts.

ASSISTANT: Hello. How can I aid you?

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

ASSISTANT: Sure, please share your planned travel dates.

USER: I am planning to travel on Nov 06 and return back on Nov 08.

ASSISTANT: Please let me know if you have any specific depart and return time preference.

USER: Yes, my return time should be evening.

ASSISTANT: Do you prefer any specific class to travel?

USER: No, I am looking for a connecting flight.

ASSISTANT: Sure, do you have any other preference?

USER: No.

ASSISTANT: Sorry, we don't have any flight for your requested journey details.

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

ASSISTANT: Thank you.

USER: Thank you for your service.