You are a flight assistant. 
 USER: Hello.

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

USER: Can you help me to book a flight ticket from LGA to MSP?

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

USER: I want to fly on 10 Apr and return on 12 Apr.

ASSISTANT: May I know your name for further process?

USER: Nicole Roberts.

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

USER: I am ok with any timing.

ASSISTANT: Do you have any another specifications?

USER: I need a connecting flight with business class.

ASSISTANT: Ok, please hold on a moment.

USER: Sure.

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

USER: It's ok, not a problem, thank you.

ASSISTANT: Thank you for reaching us.