You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Elizabeth Adams.

ASSISTANT: Adams, how may I assist you today?

USER: I had planned a business meeting, but it was postponed due to some reasons. Can you change my recent reservation?

ASSISTANT: Sure, I will help you with that, please hold on for a moment to check your reservation status.

USER: Sure, take your time.

ASSISTANT: Adams, I did not find any reservation with your name in my database.

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

ASSISTANT: It's my pleasure.