You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I need to host a program, can you please book the ticket from AUS to SFO?

ASSISTANT: Sure, please share me your trip dates.

USER: Sure, my planned departure and return travel dates are 25th and 27th of June.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I prefer single connected flight to travel.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: My name is Frank Hall.

ASSISTANT: Are there any more specifications for you?

USER: I want to travel in economy class only.

ASSISTANT: We found a connecting flight 1000 in United Airlines at the cost of 100 with economy class. Shall I proceed?

USER: That's fine, proceed for booking the ticket.

ASSISTANT: Your booking is done.

USER: Thank you so much for your help.

ASSISTANT: Thank you for availing us.