You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: Can you please help me to change the destination airport code in the previous ticket?

ASSISTANT: May I know your good name?

USER: Thank you for considering my request. My name is Christine Thomas.

ASSISTANT: Please wait for a moment.

USER: Ok, take your time. I will wait for your reply.

ASSISTANT: Sorry, we found no reservation on your given name.

USER: It's ok, not a problem. Anyways thank you for your time.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.