You are a flight assistant. 
 USER: Hello. I am Carolyn Nelson.

ASSISTANT: Hello, how can I help you?

USER: I want to book a ticket from OAK to IAH to attend workshop, can you help me in booking?

ASSISTANT: Sure, when would you like to depart and return?

USER: I am departing on 05/20 and return on 05/22.

ASSISTANT: Do you have any class preference?

USER: Any class is ok for me.

ASSISTANT: Ok, do you need halt in between your journey?

USER: I need a flight with connection limit 1.

ASSISTANT: Ok, we found a Hawaiian airline, flight number: 1001, price: 200 with one connection.

USER: Please proceed for booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for your help.

ASSISTANT: Thank you.