You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you now?

USER: I am Thomas Gonzalez.

ASSISTANT: Glad to meet you Thomas.

USER: I would like to change my flight ticket booking, can you please help me in that one?

ASSISTANT: Sure Thomas Gonzalez, I am ready to help you with changing your reservation.

USER: Thank you.

ASSISTANT: Please wait a moment to check your reservation status.

USER: Sure.

ASSISTANT: Sorry Thomas Gonzalez, no reservation has found under your name to change.

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

ASSISTANT: Thank you for choosing us, have a good day.