You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Steven Rodriguez here.

ASSISTANT: How may I assist you?

USER: I want to change my reservation due to health issue, can you help me?

ASSISTANT: Sure, I am happy to help you out in that.

USER: Thanks.

ASSISTANT: Please give me a moment to check your reservation status.

USER: Ok, I will wait for your reply.

ASSISTANT: Sorry, there are no flights found on your name to change.

USER: It's ok, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.