You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Joseph Thomas.

ASSISTANT: How may I assist you today?

USER: I would like to book a flight ticket from Oakland CA-OAK, for shopping with my granny after a long time. Could you please help me in booking a flight ticket to Seattle WA-SEA?

ASSISTANT: Sure, we are mirthful to help you.

USER: Thank you.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: I would like to depart on 06/21 and arrive on 06/23.

ASSISTANT: Do you need a lay by in between your journey?

USER: I need a lay by.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a Delta airline matching your essential details with single connection and the fare 200.

USER: Please proceed with this airline.

ASSISTANT: Your ticket has been confirmed with the flight number-1020.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.