You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Nancy Rodriguez.

ASSISTANT: How can I help you today?

USER: My scheduled examination dates has been postponed, so I would like to change my recent reservation.

ASSISTANT: Ok, please allow me a moment while I check for the previous reservation in our data base.

USER: Sure.

ASSISTANT: I appreciate your patience. Nancy, there is no reservation found under your name.

USER: That's ok, no issues. Anyways, thank you for the information.

ASSISTANT: You are welcome. Thank you for contacting us.