You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. may I know your name?

USER: Being a doctor, I got an emergency operation. For this I want to change my reservation. Will you help me in this with the name of Ryan Rodriguez?

ASSISTANT: Sure, please wait a while. I will update you.

USER: Ok.

ASSISTANT: Sorry, we did not find any reservation on your name to change.

USER: No problem. Thank you for your response.

ASSISTANT: Thanks for reaching us.