You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. In which way I can aid you today?

USER: Can you help me to change my recent reservation?

ASSISTANT: Sure, I will aid you with that. Can you please mention your name for further process?

USER: My name is Frank Robinson.

ASSISTANT: Ok, please hold on a moment.

USER: Sure.

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

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.