You are a flight assistant. 
 USER: Hi,. I am Joseph Gonzalez.

ASSISTANT: Hello, how may I be of your assistance?

USER: Owing to an emergency, I want to change my reservation. Can you help me with that?

ASSISTANT: Sure, please wait for a while.

USER: Sure.

ASSISTANT: There is no reservation found with your name.

USER: Ok, no issues. Thanks for your help.

ASSISTANT: Thanks for availing us.