You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Nicole Hernandez. I want to change my existing reservation due to sudden postpone of my exams. Can you help me?

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: Thanks for your time. We found a  reservation by this name. Can I know your updated travelling dates?

USER: I will fly on 02/19 and return on 02/21.

ASSISTANT: Please share me your airport codes.

USER: My airport codes are AUS to BOS.

ASSISTANT: Do you need any stop over?

USER: Yes, I need a halt in between my journey.

ASSISTANT: We found a Jetblue airline, flight number:1012 and the price is 100.

USER: You can proceed.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for picking us.