You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I aid you for the day?

USER: I made a reservation earlier to go for a holiday trip with my friend's, due to some issues the trip got postponed. Can you please help me in changing my existing reservation?

ASSISTANT: Sure, may I know your name?

USER: I am Brenda Edwards.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: That's ok, not an issue. Thanks for your kind response.

ASSISTANT: Thank you for reaching us, have a good day.