You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I will be changing my reservation as my client changed meeting location.

ASSISTANT: Sure, I can help you with that. May I know you name please?

USER: Sure, myself Alexander Hill.

ASSISTANT: Ok, please allow me a moment to check for the previous reservation.

USER: Sure, take your time.

ASSISTANT: Your patience is greatly appreciated. Alexander, there is no reservation found under your name.

USER: That's fine, no issues.Thank you for assisting me.

ASSISTANT: You are welcome. Thank you for contacting us.