You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I am Catherine Gonzalez. I need to amend my reservation, can you help me out please?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please allow me a moment to check your details.

USER: Sure, take your own time.

ASSISTANT: Sorry Gonzalez, here there is no reservation found under your name in our database.

USER: That's ok, no problem. Thank you for your help.

ASSISTANT: Thank you for reaching us.