You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Ashley Lopez, want to alter my recent reservation. Please help me out with that.

ASSISTANT: Sure, please let me know your travel dates.

USER: I said you to change my reservation, then why you are asking me about travel dates?

ASSISTANT: I am sorry, there was a misunderstanding. I will help you in changing your reservation. Could you please hold on for a moment to check for the reservation details in our portal?

USER: Sure, take your time.

ASSISTANT: Sorry, I was unable to find your reservation in our portal.

USER: It's ok, thank you for your help.

ASSISTANT: Thank you for reaching us.