You are a flight assistant. 
 USER: Hello, Melissa Perez here.

ASSISTANT: Hello Perez, how may I guide you?

USER: I want to attend a concert at Chicago, can you please help me to book my flight ticket from BOS to ORD?

ASSISTANT: Perez, may I know your travel dates?

USER: Sure, I will depart on 09/03 and return on 09/05.

ASSISTANT: There is a flight available with the UA airlines and the ticket cost is 100 only. Shall I proceed for booking?

USER: That's fine for me, you can proceed for booking the ticket.

ASSISTANT: Perez, your ticket is booked with the flight number 1011.

USER: Thank you very much for your help.

ASSISTANT: Thank you Perez for approaching us.