You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I am planning to book a ticket from IAD to PHL. Can you please help me out?

ASSISTANT: May I know your itinerary dates please?

USER: I am planning to travel on May 01 and return back on May 03.

ASSISTANT:  May I know your preferable journey timings?

USER: I am ok with any timings.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: I am looking for a connecting flight.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: My name is Helen Martinez.

ASSISTANT: There is a connecting flight-1017 in economy class, shall I proceed?

USER: That's fine, please proceed the booking.

ASSISTANT: Booking is done on Spirit airlines.

USER: Thank you for your service.

ASSISTANT: Welcome Helen Martinez.