You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I benefit you?

USER: As I am a arts student, I actually made a plane reservation to  Detroit earlier for submitting my project report in Detroit institute of arts but now my project is still pending and I need some time to complete it. So I want to change my existing reservation.

ASSISTANT: Certainly, I can help you in doing that.

USER: Thank you.

ASSISTANT: Could you please let me know on what name your reservation was made previously?

USER:  Please check the reservation by the name Emily Davis.

ASSISTANT: Ok, please give me a minute. I will get back to you.

USER: Ok.

ASSISTANT: Thanks for your time, I have gone through the reservation list but could not find any reservation by the name you provided.

USER: No issue, Thanks for assisting me.

ASSISTANT: You are welcome. We hope to serve you again in future.