You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How can I render you today?

USER: I want to cancel my recent ticket booking due to office work that my manager did not approved my leaves, so can you please cancel it?

ASSISTANT: Sure, we are here to assist you.

USER: Thank you.

ASSISTANT: Can you please specify your name to check with the reservation list?

USER: Sure, I did reservation with my name Emily Jackson.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: I have checked for your reservation but, I got to know that you have no reservation done with us.

USER: Ok. Thanks for the quick response.

ASSISTANT: Thank you for opting us, have a nice day.

USER: I am glad at your service.

ASSISTANT: Welcome.