You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How could I help you?

USER: Emily Rodriguez here.

ASSISTANT: Nice meeting you Emily.

USER: As my engagement got postpone, I want to change my existing reservation. Please help me with that.

ASSISTANT: Sure, I am happy to help you. Wait a moment.

USER: Ok.

ASSISTANT: Sorry Emily, as per the record's we could not found any ticket reservation on your requested name.

USER: It's ok. Thanks for the information.

ASSISTANT: Thank you for calling us, have a good day.