You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I was planning to change my holiday location to a cheaper destination within my budget. So, can you please help me with changing my existing reservation?

ASSISTANT: Sure, please share your good name?

USER: Myself John Garcia.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no reservation found on your given name.

USER: Oh! That's very sad to know. Anyways, thank you for checking.

ASSISTANT: Thank you for choosing us.

USER: Most welcome.