You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How can I amend you today?

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

ASSISTANT: Sure, we are here to aid you. To check with the reservation I need your name.

USER: My name is Larry Hernandez.

ASSISTANT: There is no reservation found on your name.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us.

USER: Thanks for the help.