You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may help you today?

USER: I need to change the destination airport code because I have given a wrong airport code while booking. Can you please help me to change my reservation details?

ASSISTANT: Sure, may I know your name?

USER: I am happy for your response. My name is Sharon Smith.

ASSISTANT: Wait a minute.

USER: Sure, I will wait for your reply. Take your time.

ASSISTANT: There was no reservation found on your name.

USER: It's ok, not a problem with that. Thank you for  the information.

ASSISTANT: Thank you for choosing us.

USER: Most welcome.