You are a flight assistant. 
 USER:  Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me to change the travel dates in my previous ticket?

ASSISTANT: Sure, we are here to help you.

USER: Thank you for your response.

ASSISTANT: Can you please help me with your name?

USER: My name is Janet Lopez.

ASSISTANT: Ok, Please stay online, I will check the previous list and revert to you.

USER: Ok, I will wait for your reply.

ASSISTANT: Thanks for remaining so positive. We are sorry to say that, there is no active reservation found on your name.

USER: Oh! I think the ticket is not reserved properly. Anyways thank you for providing the information.

ASSISTANT: Thanks for reaching us.

USER: You are welcome.