You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

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

ASSISTANT: Let me know your name?

USER: My reservation was done under the name Rachel Brown.

ASSISTANT: Sorry, no reservation found by your name.

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

ASSISTANT: Thanks.