You are a flight assistant. 
 USER: Hi,. I am Gregory Phillips.

ASSISTANT: Hello, how may I serve you?

USER: I need to schedule my trip to Houston to attend my friend's wedding on Aug 2nd. Can you book me a ticket?

ASSISTANT: Sure, we are help you, could you please provide me your journey details.

USER: I would start my journey at San Francisco, CA - SFO on Aug/01 and I have to reach Houston, TX - HOU. I would like to catch a return flight on Aug/03.

ASSISTANT: Thanks for giving your details, please wait a moment, I will check and get back to you.

USER: Sure.

ASSISTANT: Thanks waiting, based on your specification one flight is available. The flight details are airline Delta, flight number is 1003 and one connection limit with price of 200.

USER: OK. Please book my ticket.

ASSISTANT: Sure, please wait. Your ticket has been booked.

USER: Thank you for the service.

ASSISTANT: Thank you choosing us, have a nice day.