You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: My name is Joseph Phillips. Can you please help me in making changes in my recent reservation?

ASSISTANT: Nice to meet you. Please give me a moment.

USER: Ok, take your time.

ASSISTANT: Thanks for waiting, there is no reservation found under your name.

USER: That's ok, thank you for the information.

ASSISTANT: Welcome, have a great day.