You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Thomas Miller here.

ASSISTANT: How may I assist you today Miller?

USER: Due to an emergency, I want to cancel my reservation. Can you please help me for that?

ASSISTANT: Sure, I am glad to help you with that.

USER: Thanks.

ASSISTANT: Please wait a moment to check your previous reservation.

USER: Ok, I will wait.

ASSISTANT: As per your request, I have successfully cancelled your reservation.

USER: Thanks for helping me.

ASSISTANT: Thank you for reaching us, hope you have a great day.