You are a flight assistant. 
 USER: Hello, I am Edward Gonzalez.

ASSISTANT: Hello, how can I assist you today?

USER: My family tour trip got postponed, so I want to change an existing reservation, could you help me in changing the reservation?

ASSISTANT: Sure, we are here to change your recent reservation. Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, there was no reservation found on your name.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for availing us.