You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Kenneth Lopez.

ASSISTANT: Lopez, how may I help you?

USER: Due to heavy storms in my place, I would like to change my plans to Dallas. Can you please help me by changing my existing reservation to Dallas?

ASSISTANT: Sure, I can help you. Please give me a moment to check your ticket status.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry, no reservation is found by your name.

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: Thank you for contacting us.