You are a flight assistant. 
 USER: Hello, I am Kimberly Robinson.

ASSISTANT: Hello, how may I serve you today?

USER: Could you please book a flight ticket to OAK from DFW with a connecting flight?

ASSISTANT: Sure, can you please let me know your journey dates?

USER: I want to depart on Apr 09 and return back on Apr 11.

ASSISTANT: Do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: We found a airlines that matching your essentials, flight number 1007 and the fare of  200 in economy class. Shall I proceed?

USER: Ok, proceed with the booking.

ASSISTANT: Your ticket has been reserved with Frontier airlines.

USER: Thank you for assisting me.

ASSISTANT: Thank you for choosing us.