You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Joseph White.

ASSISTANT: How may I assist you today?

USER: I want to book a connecting flight ticket to attend an food festival.Can you help me?

ASSISTANT: Sure, can you provide your airport codes please?

USER: Thank you. SFO and LAS are my airport codes.

ASSISTANT: May I know your trip dates please?

USER: 07/04 and 07/06 are my travelling dates.

ASSISTANT: Do you prefer any class preference?

USER: I am comfortable with any class.

ASSISTANT: Do yo need a stopover?

USER: I need a connecting flight.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: No issue.

ASSISTANT: Thank you for approaching us.

USER: Thank you for the information.