You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you now?

USER: As my holiday trip got postponed due to heavy rain, I want to change my existing reservation.

ASSISTANT: Ok.

USER: Can you help me with that?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Let me know your name to check the previous reservation.

USER: My name is Joshua Turner.

ASSISTANT: Please, standby.

USER: Ok.

ASSISTANT: Thanks for waiting. I am sorry to inform you that, there is no reservation found on your name.

USER: No issues, thank you for the information.

ASSISTANT: Thank you for reaching us.