You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you today?

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

ASSISTANT: Sure, may I know your good name?

USER: My reservation was done under the name Gary Thomas.

ASSISTANT: Ok, Please wait for a couple of minutes.

USER: Sure, take your time.

ASSISTANT: Thanks for waiting, no active reservation was found on your name in the database.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you for choosing us.