You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, 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 am here to help you. Can I know your name?

USER: My name is James Harris.

ASSISTANT: Please wait for a moment to check your details.

USER: Sure, I will wait for your information.

ASSISTANT: Thank you for waiting, no reservation found on your name.

USER: That's ok, no issue. Anyway thank you for checking.

ASSISTANT: Thank you for reaching us.