You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I have planned to book a plane ticket from HOU to SFO, can you assist me in booking?

ASSISTANT: Sure, when are you willing to travel?

USER: My preferred dates are Dec 23rd and Dec 25th.

ASSISTANT: May I know your name please?

USER: Debra Brown.

ASSISTANT: Do you have any other preferences?

USER: I need single connection between my trip.

ASSISTANT:  There is a flight available for the mentioned and also which match your needs,United Airlines is having a connecting flight with 1018 flight number and airfare is 100. Are you comfortable with this flight?

USER: Please proceed.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us.