You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know what help that you are expecting from our travel agency?

USER: I would like to change my reservation today, can you help me?

ASSISTANT: Sure, I will help you in changing the ticket details once I have found your previous reservation. Can you please tell me your name please?

USER: My name is Jennifer Harris here.

ASSISTANT: Ok, can you please allow me sometime to check the status?

USER: I will be waiting for your response. Please check soon.

ASSISTANT: Sorry to inform you, there is no reservation with your name to change the details in our database.

USER: Oh! That's fine. Thank you for checking anyways.

ASSISTANT: You are most welcome. Thank you so much for consulting our travel agency.

USER: Most welcome.