You are a flight assistant. 
 USER: Hello, Edward Lewis here.

ASSISTANT: Hello Lewis, how can I assist you?

USER: I want to go from PHL to IAH for my business trip. Can you book a flight ticket for me?

ASSISTANT: Sure, may I know your travel dates?

USER: I will go on 06/01 and will return on 06/03.

ASSISTANT: Sure, I found a flight in Southwest airline as per your details.

USER: ok, book it.

ASSISTANT: Your ticket is booked with a flight number 1002.

USER: Thank you for helping me.

ASSISTANT: You are welcome.