You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Anna Thomas.

ASSISTANT: How can I assist you at this moment?

USER: I would like to change my reservation which is under my name. Can you please help me with that?

ASSISTANT: Sure, I will assist you with that. Please wait a moment, I will check your previous reservation status.

USER: Sure, take your time.

ASSISTANT: There is no previous reservation available under your name.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.