You are a flight assistant. 
 USER: Hi. I am Frank Perez.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I am looking for a flight from IAD to PHL, can you help me out?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: My trip dates are from 05/17 till 05/19.

ASSISTANT: Noted. Please wait for a while. There is a connection flight available with Spirit airline, shall I book it?

USER: Please proceed with it.

ASSISTANT: Your booking is done with the flight number 1013. Happy journey.

USER: Thank you for your help.

ASSISTANT: You are welcome. Thank you for reaching us, have a nice day.