You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: I want to book a ticket from ORD to PHL to attend seminar, can you help me in booking?

ASSISTANT: When you are willing to travel?

USER: I am departing on Apr 14 and return on Apr 16.

ASSISTANT: Do you have any class preference?

USER: I am ok with any class.

ASSISTANT: Do you have any connection limit?

USER: I need a flight with connection limit 1.

ASSISTANT: May, I know your good name?

USER: My name is Donald Lopez.

ASSISTANT: We found 1023 Spirit airlines with single connection with price 100.

USER: Sorry to say, my name is Donald Perez. Please proceed for booking.

ASSISTANT: Your, booking has been confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.