You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I help you?

USER: I am Brenda Phillips. I made a earlier reservation to go for a trip with my friends, due to some financial problems it got postponed. Can you please change my reservation?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please wait for a while, I will check with the reservation on your name and revert to you.

USER: Sure.

ASSISTANT: Thank you for waiting.

USER: Ok.

ASSISTANT: We did not find any reservation on your name in our database.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for contacting us.