You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

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

ASSISTANT: Sure, I will help you on that. Will you mention the name for checking the reservation?

USER: My reservation was done under the name Melissa Green.

ASSISTANT: Please give me a moment.

USER: Sure, take your time.

ASSISTANT: There is no reservation found under your name.

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

ASSISTANT: Welcome, have a great day.