You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Daniel Perez here.

ASSISTANT: How can I help you?

USER: I want to attend my convocation ceremony, so please book my ticket from ORD to PHL.

ASSISTANT: Can I know your travel dates?

USER: My itinerary dates are June 14 and June 16.

ASSISTANT: Do you have any preference?

USER: I want to depart in the morning.

ASSISTANT: Connecting flight can be booked with airline Spirit for price 100 having flight number 1008.

USER: Book my ticket.

ASSISTANT: Ticket is booked.

USER: Thank you.

ASSISTANT: Thanks.