You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

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

ASSISTANT: Can I know your travelling dates?

USER: My trip dates are 29 to 31 of July.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Is there any preference?

USER: I would like to depart in the evening with a connecting flight.

ASSISTANT: Let me know your name?

USER: I am Joshua Hernandez.

ASSISTANT: Connecting flight is found with Delta airlines for price 200. Shall I book a ticket?

USER: Please proceed.

ASSISTANT: Ticket is booked having flight number 1018 which departs at 23:00 hours and arrives at 13:00 hours.

USER: Thanks for helping me.

ASSISTANT: Thank you.