You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I guide you today?

USER: I am James Martin. Please help me to book a flight ticket from SEA to LAS.

ASSISTANT: Sure, I will help you with that. Can you please share your preferable journey dates?

USER: My journey dates are from Nov, 16 to Nov, 18.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Is there any connection limit?

USER: I need a single connecting flight.

ASSISTANT: Do you have any specifications?

USER: I need to return in the afternoon.

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

USER: Nothing to worry, thanks for your information.

ASSISTANT: Thank you for reaching us.