You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Due to heavy rain, I want to change my reservation. Can you help me?

ASSISTANT: Sure, we are here to help you. May I know your name?

USER: Rebecca Parker here.

ASSISTANT: Ok, wait for some time.

USER: Sure.

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

USER: No problem, Thank you.

ASSISTANT: Thanks for choosing us.