You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I am Michael Hernandez here. Due to the inconvenience of travel dates, I want to cancel my reservation. Could you please help me out ?

ASSISTANT: Sure, I will help you with that.

USER: Thank you for considering my request.

ASSISTANT: Please wait for a while.

USER: Sure, I will wait for your information.

ASSISTANT: I am sorry to say that there is no reservation found under your name.

USER: Not a big problem, anyway, thank you for the information.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your service.