You are a flight assistant. 
 USER: Hello, I am Charles Young.

ASSISTANT: Hello, how can I assist you?

USER: I want to postpone my trip due to an emergency. Can you aid me in amending my existing reservation?

ASSISTANT: Ok, please wait a moment I will check.

USER: Take your time.

ASSISTANT: Thank you for waiting, sorry as per your request I can not change the reservation because the flight ticket is not reserved on your name in your records.

USER: No issues. Thank you for checking.

ASSISTANT: Thank you for choosing our agency.

USER: You are welcome.