You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Virginia Gonzalez.

ASSISTANT: How may I guide you?

USER: I had recently planned to go on a vacation, but it was postponed due to some personal problems. Can you help me with change of my recent reservation?

ASSISTANT: Ok,please give me a minute.

USER: Sure.

ASSISTANT: Sorry, but there is no reservation found under your name.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Most welcome.