You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you today?

USER: I am Emily Jones, can you help me to change my reservation?

ASSISTANT: Ok, I will help you with that.

USER: Thank you.

ASSISTANT: Thank you for waiting. Sorry, there is no reservation been found on your name.

USER: No issues, thank you for your time.

ASSISTANT: Thank you for choosing our agency.