You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Will you please make me a plane reservation in business class?

ASSISTANT: Sure, let me know your airport codes?

USER: I am heading to LAS and will fly out from IAD.

ASSISTANT: Ok, when are you willing to travel?

USER: My departure is on July 5th and arrival is on July 7th.

ASSISTANT: Would you like any break in your journey?

USER: No, I am looking for a direct flight on my way.

ASSISTANT: Ok, any other preference?

USER: No, I am fine with above essentials.

ASSISTANT: Can you share your name to proceed further?

USER: I am Ryan Edwards.

ASSISTANT: Sorry, no flights found with your requirements.

USER: That's alright, thanks for your assistance.

ASSISTANT: Thank you for contacting us.