You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How may I support you?

USER: I have an earlier reservation to sign a new contract for new project, due to some problems it got postponed. Can you help me to change my existing reservation?

ASSISTANT: Sure, we are happy to help you.

USER: Thank you.

ASSISTANT: May I know your good name?

USER: Catherine Martinez here.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for your time, no reservation found on the name of Catherine Martinez.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for contacting us.