You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: Myself Melissa Perez. I am looking for a direct flight from SEA to LAS, can you help me with booking?

ASSISTANT: I am happy to help you with that. Can you please share your preferable journey dates?

USER: Sure, my trip dates are from 11/23 and 11/25.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: It's ok, thanks for your information.

ASSISTANT: Thank you for contacting us.