You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I made an earlier reservation to attend  marriage, due to some issues it got postponed? Can you please change my reservation?

ASSISTANT: Sure, I am glad to help you. Can you please let me know your name So, I can check further?

USER: My name is Christine Thomas.

ASSISTANT: Thank you for sharing your name. Please allow me 2-3 minutes while I check for your reservation status in our database.

USER: Sure.

ASSISTANT: Thank you for waiting, Christine Thomas. Sorry, there is no active reservation found under your name to amend.

USER: Ok, no issue. Thank you.

ASSISTANT: Thank you for reaching us. Have a great day!.