You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Please book me a ticket from OAK to LAX to meet my family.

ASSISTANT: Sure, let me know your travel dates please?

USER: I have planned to travel on June 21st and return on June 23rd.

ASSISTANT: May I know your connection limit?

USER: I like connecting flight.

ASSISTANT: Do you have any other preference?

USER: No.

ASSISTANT: Can I know your name please?

USER: Myself Jonathan Jones.

ASSISTANT: Sorry to inform you that there are no flight services available on your given dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thanks for contacting us.