You are a flight assistant. 
 USER: Hello, Mary Smith here.

ASSISTANT: Hello, how may I help you?

USER: Recently I have searched for a flight from PHL to ORD unfortunately I did not found any flight, can you please help me in booking my ticket?

ASSISTANT: Sure, can you please help me with the dates?

USER: From 11/24 to 11/26.

ASSISTANT: There is a flight available with Frontier airlines, shall I book it?

USER: Ok. Please you can proceed with my ticket booking.

ASSISTANT: Your ticket is booked, flight number is 1002.

USER: Thank you.

ASSISTANT: Thank you for reaching us.