You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you today?

USER: I am Edward Hernandez. Actually I have planned to attend the client meeting but due to some technical issues the meeting has been postponed. Can you please help me to change my reservation?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please wait for a while, I will check your previous reservation.

USER: Ok, I will wait.

ASSISTANT: Thank you for being patience, there is no active reservation found on your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for contacting us.