You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Gary Robinson here.

ASSISTANT: How may I help you?

USER: I want to travel from PHL to IAH.

ASSISTANT: Sure, I am here to help you. Could you please share your journey dates to search a flight availability?

USER: My travelling dates are from 09/09 to 09/11.

ASSISTANT: Do you have any requirements?

USER: No.

ASSISTANT: There is a flight-1001 of Southwest airlines, shall I proceed?

USER: Please proceed.

ASSISTANT: Ok, your booking is done.

USER: Thank you.

ASSISTANT: Welcome.