You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me in changing the past ticket details, because the airport codes in that are wrongly printed?

ASSISTANT: Sure, I am glad to help you. Could you please provide your name to check your reservation status?

USER: Yes, my name is Dorothy Adams.

ASSISTANT: Ok, please wait a moment I will check your details and revert you.

USER: Ok, take your time.

ASSISTANT: Sorry to say, I did not find any details in my website regarding your reservation.

USER: It's ok, thank you for searching.

ASSISTANT: Thank you for choosing us, have a nice day.

USER: Welcome.