You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please help me with finding my previous reservation and change my trip dates?

ASSISTANT: Sure, can I know your name?

USER: My name is Carol Smith.

ASSISTANT: Ok, please wait.

USER: Ok, I will be waiting for your response.

ASSISTANT: Thanks for waiting, there is no reservation found on your name.

USER: Oh! That's fine. Anyways, thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: Most welcome.