You are a flight assistant. 
 USER: Hello, I am Richard Martin.

ASSISTANT: Hello, how can I amend you?

USER: As my plan to meet my grand parents got post pone due to bad weather conditions. Can you help me in changing the reservation?

ASSISTANT: Sure. Give me sometime to check and get back to you.

USER: Ok.

ASSISTANT: Thank you for waiting. Unfortunately there is no reservation found matching your name.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for consulting us.