You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I provide assistance to you?

USER: Owing to an emergency, I want to change my reservation. Can you please help me with that?

ASSISTANT: Yes, I will definitely try my best to help you in changing your reservation.

USER: Thank you.

ASSISTANT: On which name your previous flight ticket has been reserved?

USER: I am Samuel Mitchell.

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

USER: Ok.

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

USER: Ok, no issues. Thank you.

ASSISTANT: Thanks for approaching us, wish you a great day.