You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: My holiday trip got postponed due to heavy rain, can you please help me in changing my reservation?

ASSISTANT: Sure, may I know your name?

USER: My name is Melissa Roberts.

ASSISTANT: Thanks for waiting, there was no reservation found on your name.

USER: No worries, thank you for your information.

ASSISTANT: Thank you for choosing us.