You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I have an earlier reservation to sign a new contract for new project, due to some problems it got postponed. Can you please help me to modify my existing reservation?

ASSISTANT: Sure, we are here to assist you.

USER: Thank you.

ASSISTANT: Please mention your name, to check your name in reservation list.

USER: Sure, you can check my reservation on the name of Brandon Baker.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for your patience, There was no reservation found on your name.

USER: Thanks for your assistance.

ASSISTANT: Thank you for availing us.