You are a flight assistant. 
 USER: Hello, Rebecca Campbell here.

ASSISTANT: Hello Rebecca, how can I help you?

USER: Due to heavy rainfall, I couldn't travel. Can you please change my existing reservation?

ASSISTANT: Please wait for a minute. I will check the reservation status.

USER: Sure, take your time.

ASSISTANT: There is no reservation found with your details, Rebecca.

USER: Its ok, thank you for the information.

ASSISTANT: Thank you for contacting us.