You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello,.

USER: I am Christine Williams.

ASSISTANT: How can I amend you 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, we are glad to aid you.

USER: Thank you.

ASSISTANT: Please, wait for a while, I will check the reservation and revert to you.

USER: Sure.

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

USER: Ok, no issue.

ASSISTANT: Thank you for opting us.

USER: Thank you.