You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: On my semester exams I am unable to attend the trip which my friend's has planned, so, can you cancel my ticket reservation?

ASSISTANT: Sure, let me know your name please.

USER: Andrew Martinez is my name.

ASSISTANT: Ok, we found a reservation with your name and we had cancelled that but you will be charged 10 percent and your remaining account will be credited to your account today itself.

USER: I hope that the remaining amount will be credited to my account at the end of day, thank you for your help.

ASSISTANT: Sure, trust me it will be credited to your account till the end of the day.

USER: You have done a great job, thank you for your service.

ASSISTANT: It's my pleasure.