You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I planned to change my trip to Boston, can you help me out?

ASSISTANT: Sure, I can help you with that. Can I have your good name please?

USER: Myself Betty Johnson.

ASSISTANT: Please wait for a while.

USER: Ok, take your own time.

ASSISTANT: Betty Johnson, there is no active reservation found under your name to do changes in that.

USER: That's ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for choosing us.