You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello. How may I assist yo today?

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

ASSISTANT: Sure, may I know your good name please?

USER: Thanks for your response. Amy Gonzalez, is my name.

ASSISTANT: Ok, please stand by.

USER: Sure.

ASSISTANT: There is no existing reservation found on your name.

USER: Ok, thanks for your kind information.

ASSISTANT: Thank you for reaching us.