You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Deborah Nelson.

ASSISTANT: How may I help 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, I will help you. Please, wait a minute.

USER: Ok.

ASSISTANT: Thanks for your time. There is no reservation found on your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for availing us.