You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. In which way I can help you today?

USER: I am Christopher Walker. Can you help me in booking a flight ticket from SEA to CLT?

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

USER: I want to travel on 10/18, and return on 10/20.

ASSISTANT: Are you okay with connecting flight or you need any direct flight?

USER: I need a connecting flight.

ASSISTANT: Do you need any specific depart and arrival time for this trip?

USER: I want to return in the afternoon time.

ASSISTANT: Do you have any another specifications?

USER: No.

ASSISTANT: Ok, please hold on a moment.

USER: Sure.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for contacting us.