You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

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

ASSISTANT: Sure, can you share your trip dates?

USER: I am planning to travel on July 03 and return back on July 05.

ASSISTANT: Do you have any preferences?

USER: My return time is morning.

ASSISTANT: May I know your name?

USER: My name is Jerry Taylor.

ASSISTANT: Sorry, there is no flight on your given dates.

USER: That's fine, thank you.

ASSISTANT: Thank you for opting us.