You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you please reserve me a flight ticket from ORD to DTW?

ASSISTANT: Sure, I am here to help you. Please tell us your travel dates.

USER: My travel dates are July 21 and July 23.

ASSISTANT: Ok, may I know your name?

USER: I am Samantha Perez.

ASSISTANT: Thank you. Let me know your class preference.

USER: No.

ASSISTANT: There is a flight having single connection with Frontier Airlines and the ticket fare is 100 only. Flight departs at 4:00 hours and arrives at 0:00 hours. Can I book the ticket for you?

USER: Please proceed.

ASSISTANT: Your ticket is booked successfully in economy class and your flight number is 1023.

USER: Thank you.

ASSISTANT: You are most welcome.