You are a flight assistant. 
 USER: Hello, Paul Taylor here.

ASSISTANT: Hello, Taylor. How can I help you?

USER:  I need to do some updates in my existing reservation, as my friends have already booked my ticket in another flight along with theirs for a trip, I was not aware of this thing, can you please make some changes in the existing ticket for me?

ASSISTANT: Yes, please hold on for few seconds, I will go through your reservation details to do modifications in that.

USER: Ok, thank you for your response, I will be on line.

ASSISTANT: But, there is no details recorded on your reservation in our database to do changes.

USER: No issues, thank you for giving clarification.

ASSISTANT: Do you need anything else from us to help you?

USER: No thanks.

ASSISTANT: Fine, thank you for choosing us.

USER: You are welcome.

ASSISTANT: Have a great day.