You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I want to change my reservation as my exams got postponed. Can you help me?

ASSISTANT: Sure, may I know your name?

USER: I am Ruth Hernandez.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: We found a reservation found on your name, can you please help me with trip dates?

USER: I would start on June 19th and return on June 21st.

ASSISTANT: May I know your airport codes?

USER: My origin is DTW and destination is BOS.

ASSISTANT: Do you have any connection limit?

USER: I need 1 stop over.

ASSISTANT: Any other specifications to be met?

USER: No.

ASSISTANT: We found an airline Hawaiian with flight 1017 having a fare 100 with stopover.

USER: Fine, please go ahead.

ASSISTANT: Your reservation has been changed successfully.

USER: Thanks for your service.

ASSISTANT: Thank you for opting us.