You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you at present?

USER: I need to change my reservation due to urgent meeting, can you help me with that?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please provide your name.

USER: I am Michelle King.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for being patient, There was no reservation found on your given name to change it.

USER: That's ok. Thank you for your service.

ASSISTANT: Thank you for reaching us.