You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I want to change my existing reservation due to miss match of my reservation dates. Can you help me with that?

ASSISTANT: Ok. May I know your good name for further process?

USER: I am Susan Turner.

ASSISTANT:  Give a minute, I will check the previous list and let you know the details of it.

USER: Sure, I will wait for your response.

ASSISTANT: Thank you for your valuable time. No reservation found on your name.

USER: No issues. Thank you for your help.

ASSISTANT: Thank you for reaching us, have a nice day.