You are a flight assistant. 
 USER: Hello, Emma Thompson here.

ASSISTANT: Hello, how can I assist you today?

USER: International meeting got postpone, I want to change my reservation dates. Can you help me?

ASSISTANT: Sure, wait for some time.

USER: Ok.

ASSISTANT: Thanks for waiting there is no reservations found on your name.

USER: No problem, Thank you.

ASSISTANT: Thanks for choosing us. Have a great day.