You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you at this moment?

USER: I am planning to book a ticket from BOS to MSP. Can you please help me out?

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

USER: I am planning to travel on Dec 06 and return back on Dec 08.

ASSISTANT: May I know your name for further process?

USER: I am Emma Garcia.

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

USER: I am ok with any timings, I am looking for a business class.

ASSISTANT: Do you have any another specifications?

USER: I am looking for a normal cost airline.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

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

USER: That's fine, thank you.

ASSISTANT: Thank you for contacting us.