You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I amend you today?

USER: Owing an emergence, I want to change my recent reservation. Can you please help me with it?

ASSISTANT: Sure, may I know your name please?

USER: My name is Mary Rodriguez.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Thank you for your time. Sorry, we did not find any reservation in your name.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us. Hope to serve you again.

USER: Thanks for the help.