You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Can you please let me know how may I guide you?

USER: I would like to book a ticket from OAK to LGA, can you please help me out?

ASSISTANT: Sure, I will help you. Can you please tell me your preferable dates to departure and return?

USER: I am travelling on these dates NOV 18th and 20th.

ASSISTANT: Ok, on which name do you want me to reserve the ticket?

USER: Kimberly Mitchell here.

ASSISTANT: Which flight do you prefer either a direct flight or a connecting flight?

USER: I need single connected.

ASSISTANT: Ok, can you please share your other preferences?

USER: I prefer return in the morning.

ASSISTANT: Sorry to intimate you that, there are no flights found which are returning in the morning time.

USER: Ok no problem, thank you for your services.

ASSISTANT: You are welcome. Thank you for choosing us. Have a nice day.