You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I respond to your request?

USER: Betty Turner here. I want to book a flight ticket from SEA to CLT. Can you help me in that?

ASSISTANT: Sure, we are mirthful to help you.

USER: Thank you.

ASSISTANT: Please let me know your journey dates for further booking.

USER: My trip dates are Feb 26 to Feb 28.

ASSISTANT: Do you like to go with a economy class or business class?

USER: I am okay with any class.

ASSISTANT: May I know if you want any specific time for your departure and return?

USER: My depart and arrival should be in the afternoon.

ASSISTANT: Do you need any specifications in connection?

USER: I need a connecting flight.

ASSISTANT: Sorry to inform you that there are no flights available on your preferable dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thanks for reaching us.