You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Cynthia Edwards here.

ASSISTANT: Nice to meet you Cynthia Edwards.

USER: I want to change my existing reservation, due to heavy rains. Can you please help me?

ASSISTANT: Sure, give me a minute.

USER: Ok.

ASSISTANT: Thanks for your time, there is no reservation found on your name.

USER: That's ok, thank you for checking.

ASSISTANT: Ok, thanks for choosing us.