You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Patrick Rodriguez.

ASSISTANT: Ok Patrick, how can I assist you?

USER: Due to my health issues, I would like to change my existing reservation to some other dates. Can you help me?

ASSISTANT: Ok, I will help you with that. Please wait a moment while I check.

USER: Sure.

ASSISTANT: Sorry, as I had gone through the reservation records I did not find your name.

USER: Oh! its ok, thank you for the information.

ASSISTANT: Thank you for connecting with our agency.