You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, can I have your name?

USER: Unfortunately my exams was postponed so I want to change my reservation, could you please help me to change my reservation?

ASSISTANT: Sure, We are here to help you. Please let me now your name.

USER: My name is Dorothy Collins.

ASSISTANT: Thanks for waiting, We are pleased to inform you that we found your reservation.

USER: Ok.

ASSISTANT: May I know your new reservation details?

USER: My new travel dates are from 04/13 to 04/15.

ASSISTANT: Please share me your airport codes.

USER: My airport codes are from PHL to DCA.

ASSISTANT: We found a connecting flight with the price 100, flight number 1003. Is this alright with you?

USER: Yes, please book this ticket.

ASSISTANT: Your ticket has been confirmed with Hawaiian airline.

USER: Thanks for booking my ticket.

ASSISTANT: We look forward to see you again, have a safe journey.