You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Christine Hall here. I would like to book a ticket from IAH to PHL, can you please help me with that?

ASSISTANT: Sure, help me with the trip dates?

USER: The travel dates are from 05/24 to 05/26.

ASSISTANT: May I know your name for the booking process?

USER:  Christine Hall here.

ASSISTANT: Do you have any preferences?

USER: I prefer economy class.

ASSISTANT: There is a flight in an airline Frontier with 1025 number having a direct connection in an economy class. Shall I proceed to book?

USER: Please proceed.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.