You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I be your helping hand today?

USER: Due to sudden change in my trip to another location, I would like to change my existing reservation. Can you please help me out?

ASSISTANT: Sure, I can help you in this.

USER: Thank you.

ASSISTANT: Can I have your name please?

USER: My name is Scott Green.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: Thanks for your time, there is no active reservation found on your name to change it.

USER: That's ok, not an issue. Thank you.

ASSISTANT: Thanks for approaching us.