You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am just trying to change the ticket details in the past reservation, could you please aid me to modify the ticket details?

ASSISTANT: Sure, may I know your name please?

USER: Thank you for your response. My name is Stephanie Taylor.

ASSISTANT: Wait a moment.

USER: Ok, I will wait for your reply.

ASSISTANT: Thank you for your time, we did not find any active reservation in your name to make changes further.

USER: It's ok, not an issue with that. Anyhow thanks for your help.

ASSISTANT: Thank you for choosing us.