You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Due to bad weather conditions, I cannot attend my meeting. Can you help me to change my existing reservation?

ASSISTANT: Sure, may I know your name?

USER: Sure, my name is Frank Perez.

ASSISTANT: Please give me a moment to check your ticket status.

USER: Ok.

ASSISTANT: Sorry Frank, no reservation is available by your name.

USER: That's ok, thank you.

ASSISTANT: Thank you for contacting us.