You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Betty Lewis.

ASSISTANT: How can I help you?

USER: My business meeting has been postponed. So, I would like to take change my reservation. Can you please help me with that?

ASSISTANT: Sure, give me a minute.

USER: Sure, take your time.

ASSISTANT: Sorry, there is no reservation found under your name.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for reaching us.