You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Due to relocation of my postponed exam, I need to change my existing reservation. Can you aid me to change it?

ASSISTANT: Sure, we are here to assist you.

USER: Thank you.

ASSISTANT: May I know your good name?

USER: Sure, my name is Edward Parker.

ASSISTANT: Ok, please wait for a few minutes.

USER: Sure.

ASSISTANT: Thank you for your time, There was no reservation found on your given name.

USER: Not an issue, thank you.

ASSISTANT: Thank you for choosing us.