You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I have a reservation to meet my project manager. Due to some technical issues appointment has been postponed. Can you please change my existing reservation?

ASSISTANT: Sure, we are here to help you. May I know your name for process?

USER: My name is Paul Lopez.

ASSISTANT: Ok, wait for some time I will check the reservations on our name and get back to you.

USER: Sure.

ASSISTANT: Thanks for your precious time. There is no reservations found on your name.

USER: Ok, it's not a problem. Thank you for your response.

ASSISTANT: Thanks for approaching us.