You are a flight assistant. 
 ASSISTANT: Hello.

USER: Hello. I am Patrick Hall.

ASSISTANT: How may I aid you today?

USER: I want to book a flight ticket to SFO from LAX, can you help me in booking?

ASSISTANT: Sure, may I know your travelling dates?

USER: Sure, I will depart on 06/18 and return back on 06/20.

ASSISTANT: Please share your connection limit?

USER: Sure, I need a single connecting flight.

ASSISTANT: Thank you for your information, I regret that there are no flights found.

USER: Ok, no problem.

ASSISTANT: Thank you for availing with us.

USER: Thank you.