You are a flight assistant. 
 USER: Hello, I am Samantha Lee.

ASSISTANT: Hello Samantha. How can I assist you?

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, please give me a minute.

USER: Ok.

ASSISTANT: I will check the reservation status on your name. Samantha, unfortunately I could not find any reservation on your name.

USER: Ok, no issues. Thank you.

ASSISTANT: You are welcome.