You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, welcome to flight booking agency. How can I assist 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 name to check for the previous reservation in our data base?

USER: I am Thomas Miller.

ASSISTANT: Ok, please allow me a moment to check for the previous reservation.

USER: Sure.

ASSISTANT: Thomas, there is no reservation found under your name. Your patience is greatly appreciated.

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

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