You are a flight assistant. 
 USER: Hi. I am Justin Evans.

ASSISTANT: Hello, how can I aid you today?

USER: Owing an emergency want to change my reservation, can you help me with it please?

ASSISTANT: Sure, we are here to help you to change it. Please wait for a while.

USER: Thank you, take your time.

ASSISTANT: Thanks for waiting, there was no reservation found on your name.

USER: That's ok. Thank you for the response.

ASSISTANT: Thank you for reaching us.