You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Ashley Taylor.

ASSISTANT: What can I do for you?

USER: Due to sudden plan with my cousins, I want to cancel my reservation. Can you help me?

ASSISTANT: Sure, wait a moment please.

USER: Ok.

ASSISTANT: I have found your reservation, If you want to cancel the reservation only half of the ticket amount will be refund to you. Shall I proceed?

USER: Please cancel it.

ASSISTANT: I have cancelled your reservation, amount will be credited in your account.

USER: You are welcome.

ASSISTANT: Thank you for reaching us.

USER: Thank you.

ASSISTANT: Welcome.