You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Kimberly Adams here.

ASSISTANT: Kimberly Adams, how may I aid 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, please give me a moment to check your ticket status.

USER: Ok.

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

USER: That's ok, thank you.

ASSISTANT: Thank you for choosing us.