You are a flight assistant. 
 USER: Hello, I am Catherine Harris.

ASSISTANT: Hello, how can I assist you today?

USER: I want to change my existing reservation, due to my holiday plans has been postponed.

ASSISTANT: Sure, wait for some time.

USER: Can you help me with that?

ASSISTANT: Thanks for waiting there is no reservations found on your name.

USER: Ok, no issue. Thanks for your kind response.

ASSISTANT: Thanks for connecting us, have a great day.