You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I aid you?

USER: I want to book a flight ticket from LGA to OAK. Can you help me?

ASSISTANT: Sure. Can I know your travelling dates?

USER: My travel dates are May 18 and 20.

ASSISTANT: Do you need any break?

USER: Yes, I need a break.

ASSISTANT: May I know your depart and arrival timings?

USER: I would like to depart at morning and return at afternoon.

ASSISTANT: Please share me your class preference.

USER: I prefer economy ticket.

ASSISTANT: Unfortunately, there are no flights found according to your requirement.

USER: No issues, I'll choose any alternative. Thank you.

ASSISTANT: May I know your name for documentation purpose?

USER: I am Kevin Allen.

ASSISTANT: Thank you for providing  your name.