You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you?

USER: I have made an reservation earlier to attend to my cousin marriage, due to some reasons it has been postponed. Can you aid me to change it?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: We need your name to change your reservation.

USER: Sure, my name is Christine Jackson.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for your patience. There was no reservation found on your name.

USER: Ok, not an issue. Thanks for your help.

ASSISTANT: Thank you for opting us.