You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Suddenly I met with an accident, so doctor suggested me to take some bed rest. I am unable to travel for the trip which I have planned, can you please cancel my ticket?

ASSISTANT: Yes, I am gleeful to help you. Can you please let me know your good name for checking in our data base?

USER: My name is Thomas Clark.

ASSISTANT: Please wait for a moment.

USER: Ok, take your time.

ASSISTANT: Thank you for waiting.

USER: It's alright.

ASSISTANT: I could not find any previous booking done on the name which you have have provided.

USER: It's ok, I think my brother might cancelled my ticket. Anyway's thank you for checking.

ASSISTANT: Thank you for your valuable time in reaching us, have a nice day.

USER: Welcome.