You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you at this moment?

USER: I am Timothy Moore. Due to some problems in our home I am unable to travel the trip, can you please help me in flight ticket modification?

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

USER: Thank you for considering my request.

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

USER: Ok, that's fine. Thank you for your quick information.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Welcome.