You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself John Hernandez.

ASSISTANT: How may I aid you?

USER: I am looking for a flight from PHL to HOU, can you help me in booking the flight ticket?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: Thank you. Sure, my planned travel dates are 12/02 and 12/04.

ASSISTANT: Wait a moment please.

USER: Ok, I will wait for the response.

ASSISTANT: Delta airlines is available in your route with the ticket fare of 300, shall I proceed with the booking?

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

ASSISTANT: Your ticket is booked with the flight number 1004.

USER: Thank you for your expeditious service.

ASSISTANT: Thank you for reaching us.