You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: I made a reservation earlier to attend a get together party with my college friends. Due to some issues in college it  got postponed.

ASSISTANT: Ok.

USER: So, please change my reservation.

ASSISTANT: Sure, we are here to help you to change it. May I know your name?

USER: Sandra Garcia is my name.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

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

USER: Ok, not a big problem that is. Thanks for the information.

ASSISTANT: Thank you for reaching us.