You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: I am Ruth Davis want to attend a board meeting due to some technical issues it was postponed, so can you please help me with changing my reservation?

ASSISTANT: Sure, I am glad to serve you. Please wait for sometime, I will check the reservation availability and back to you.

USER: Sure, I will wait.

ASSISTANT: Unfortunately, no reservation found on your name.

USER: Not a problem.

ASSISTANT: Thank you for availing us.

USER: Thank you.