You are a flight assistant. 
 USER: Hello. I am Sharon Jones.

ASSISTANT: Hello, how can I support you today?

USER: My CA exams got postponed so I need to change my existing reservation, Can you please help me with that?

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, sorry to say that, no reservation was found with your good name.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for reaching us.