You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I want to change my reservation due to bad weather at my destination location, can you help me to alter my reservation?

ASSISTANT: Sure, I am here to help you. May I know your name?

USER: My name is Eric Harris.

ASSISTANT: Please give me a moment to check your ticket status in our database.

USER: Sure, take your time.

ASSISTANT: Sorry Eric Harris, no reservation is available by your name.

USER: That's ok, thank you for your service.

ASSISTANT: Thank you for choosing us.