You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, thanks for connecting with us. How can I help you?

USER: Myself Scott Davis. I would like to change my existing reservation, because my friend got accident so I want to stay with him can you help me for this?

ASSISTANT: I'll be glad to help you. Please wait for a while to check your reservation details?

USER: I will wait for your reply.

ASSISTANT: Sorry, there is no reservation found by your name.

USER: Ok, no issues.

ASSISTANT: Do you need any other information please?

USER: No, thank you for your services.

ASSISTANT: Thank you and have a nice day.