You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know how best can I help you at this moment?

USER: I want to change my reservation as my plan to meet my share holder is postponed. Can you help me with that?

ASSISTANT: Sure, I am perky to help you. Can you please, share me your name to check your reservation status?

USER: I am Margaret Campbell.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name in our database.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for reaching us.