You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you today?

USER: I am Cynthia Lee, can you please search a flight ticket from LAS to CLT?

ASSISTANT: Sure Lee, I will help you with that, please share your travelling dates?

USER: My trip dates are 04/26 and 04/28.

ASSISTANT: Sorry for the inconvenience Lee, no flights as per your details.

USER: Ok, fine. Thank you for assisting me.

ASSISTANT: Thank you for reaching us.