You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: Please help me to change an existing reservation as my plan to meet my grand parents got postpone due to bad weather conditions.

ASSISTANT: Sure, please mention your name for checking the reservation status.

USER: I made a reservation by the name Matthew Wright.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation found under your name.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Welcome, have a great day.