You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Debra Smith.

ASSISTANT: How can I assist you?

USER: My scheduled examination dates has been postponed, could you please help me with changing my recent reservation?

ASSISTANT: Yes, I can help you to change the reservation if I found it in our records. Please wait I will check.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, I am sorry to inform that there is no reservation been found on the name Debra Smith.

USER: That's ok, not an issue.

ASSISTANT: Thank you for connecting with our agency.

USER: Anyways, thank you for the information.