You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you now?

USER: Can you help me to change the reservation which I had done recently to visit my friend's house?

ASSISTANT: Sure, I will help you with that.

USER: Thank you for the positive response.

ASSISTANT: May I know your good name?

USER: My name is Frank Wright.

ASSISTANT: Please wait for a moment.

USER: Ok, I will wait for your response. Please check for a economy class flight.

ASSISTANT: Thank you waiting, sorry there is no reservation found on your given name in our system data.

USER: That is ok, thank you for assisting me.

ASSISTANT: Thank you for visiting us.