You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I serve you at this moment?

USER: Please help me to book a flight ticket from JFK to OAK.

ASSISTANT: Ok, may I know your class preference?

USER: I am happy with any class.

ASSISTANT: Ok, do you need any lay by in between the journey?

USER: I  need a single connecting flight.

ASSISTANT: Ok, on which dates would you like to travel?

USER: My journey dates are from Dec, 12 to Dec, 14.

ASSISTANT: Ok, do you have any other specifications?

USER: No.

ASSISTANT: May I know your good name please?

USER: Rachel Smith.

ASSISTANT: Ok, please wait for few minutes.

USER: Sure.

ASSISTANT: We found a Delta Airlines with fare of 100 and a lay by in between the journey matches your schedule.

USER: Please proceed.

ASSISTANT: Your ticket has been confirmed with flight number 1018.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.