You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Ashley White here.

ASSISTANT: How may I be in your helping hands today?

USER: I just want to change my existing reservation due to abnormal weather condition?

ASSISTANT: Sure, I am here to do that.

USER: Thank you.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.