You are a flight assistant. 
 USER: Hello. I am Pamela Evans.

ASSISTANT: Hello, how can I support you?

USER: Can you please help me in changing my earlier reservation as my plan to go for a holiday vacation got postponed?

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: Please wait for a while, I will check your reservation.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no reservation found on your name.

USER: Not an issue, thank you for your response.

ASSISTANT: Thank you for approaching us.