You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your name?

USER: My name is Steven Lewis.

ASSISTANT: How may I assist you today?

USER: I want to book flight ticket to visit Universal Studios in Los Angeles LAX on 11/15. Can you help me with booking a connecting flight?

ASSISTANT: Sure, please share me your source airport code?

USER: My source airport code is Dallas & Forth Worth DFW.

ASSISTANT: Please mention your return journey date?

USER: I intend to return on 11/15.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry there is no flight available on your given journey data.

USER: Ok, no worries at all. Thank you.

ASSISTANT: Thank you for visiting us, have a nice day.