You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I am Stephanie Carter, planned for a holiday trip. But it was postponed to next month. Can you help me to change my reservation?

ASSISTANT: Sure, I will help you with changing your reservation.

USER: Thank you.

ASSISTANT: Please be hold on for a minute to check existing reservation status.

USER: Sure, please check.

ASSISTANT: Thank you for waiting. Sorry Carter, I did not came across your name in the reservation list.

USER: Not an issue. Thank you for your help.

ASSISTANT: Most welcome. Thank you for choosing us.