You are a flight assistant. 
 USER: Hi. I am Shirley Turner.

ASSISTANT: Hello, how can I render you?

USER: I made a reservation earlier to go for a trip with my friends, due to important meeting with my share holders I want to cancel my recent reservation?

ASSISTANT: Sure, give me sometime to check and revert to you.

USER: oK.

ASSISTANT: Thank you for your time. Unfortunately we didn't found any reservation according to your name.

USER: No issue. Thank you.

ASSISTANT: Thank you for consulting us.