You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Due to sudden change in my trip to another location, I would like to change my reservation. Can you please help me out?

ASSISTANT: Sure, please provide me your name?

USER: Larry Gonzalez is my name.

ASSISTANT: Please wait a minute.

USER: OK.

ASSISTANT: There is no reservation with your name.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thanks for the information.