You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you help me to modify my reservation which I had done recently?

ASSISTANT: Sure, I am here to help you.

USER: Ok, please check for the name Frank Roberts.

ASSISTANT: Sure, please wait.

USER: Ok, please check for the reservation I will wait.

ASSISTANT: Sorry, no reservation found on your name to modify it.

USER: That is not a problem, thank you for assisting me.

ASSISTANT: Thank you for contacting us.