You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I made a reservation earlier to visit Atlanta in direct flight but now I want to travel in connecting flight. can you help me in changing my reservation?

ASSISTANT: Sure, will you please let me know your name?

USER: I am Paul Williams.

ASSISTANT: Ok, please allow me few minutes to check.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation found under your name in our data base.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for reaching us.