You are a flight assistant. 
 USER: Hi, I am Rebecca Perez.

ASSISTANT: Hello, How can I support you the day?

USER: Change     Actually I made a earlier reservation to go for a trip with my friends, but heavy work load in office I want to change my reservation. Can you help me with that?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please wait, let me check the reservation status.

USER: Sure.

ASSISTANT: Thanks for your patience, we did not find any reservation on your name to change it.

USER: Oh! may be booking not done properly. Thank you.

ASSISTANT: Thanks for reaching us.