You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Rachel Moore. I made a reservation earlier to attend a get together party with my college friends. Due to some issues in college it  got postponed. Can you help me in changing?

ASSISTANT: Sure, please give me a moment.

USER: Ok.

ASSISTANT: There is no reservation found with your given name.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.