You are a flight assistant. 
 USER: Hello, I am Joshua Phillips.

ASSISTANT: Hello, how can I provide service to you?

USER: As my schedule of attending an interview got postponed. Can you please help me in changing my reservation?

ASSISTANT: Sure, it's our pleasure to help you. Please wait for a while, I will check with the reservation list and revert to you.

USER: Ok.

ASSISTANT: Thank you for your patience. Sorry to inform you that, there is no reservation found with your name in our records.

USER: Ok, no issue. Thank you for your information.

ASSISTANT: Thank you for connecting with us. Have a great day.