You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I assist you?

USER: I would like to change my recent reservation, due to my sudden meeting with my chairman on my boarding day. Can you help me with that?

ASSISTANT: Sure, may I know your name?

USER: Thank you for your response. Ruth Gonzalez, is my name.

ASSISTANT: Ok, please wait a moment.

USER: Sure, I will wait.

ASSISTANT: Sorry, there was no reservation found in your name.

USER: Ok, No problem at all.

ASSISTANT: Thank you.

USER: Thanks for your information.