You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what kind of service are you seeking from us?

USER: Can you please reserve me a flight ticket from BOS to OAK?

ASSISTANT: Sure, on which dates would you like me to book a flight ticket for you?

USER: I would like to travel on these dates, from Nov 10 to Nov 12.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: Do you need a lay by in between your journey?

USER: Yes, I need a connecting flight.

ASSISTANT: Do you have a airline preference?

USER: I would prefer normal-cost airlines.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: Sorry, there were no flights found on your route.

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

ASSISTANT: May I know your name?

USER: Jerry Collins here.

ASSISTANT: Thank you for contacting us.