You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am Barbara White. I would like to change my existing reservation, due to sudden changes in climate I am not able to participate in the final tournament of baseball. Can you please help me in changing?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please wait a moment, I will check your reservation status.

USER: Sure.

ASSISTANT: Barbara, no reservation has been found on your name in our database.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for approaching us.