You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you now?

USER: I am Helen Thomas from Washington. I would like to visit the San Francisco Maritime National Historical Park so, can you please help me in booking a flight ticket?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please share me your source and destination airport code?

USER: My source and destination airport codes are IAD and SFO.

ASSISTANT: May I know your planned journey dates?

USER: My journey dates are 03/16 and 03/18.

ASSISTANT: Do you want any halt in between your flight journey?

USER: Yes, I prefer a connecting flight in between my journey.

ASSISTANT: Please mention your budget for flight ticket?

USER: My budget limit is 1000.

ASSISTANT: Thank you for the details, please wait for a moment.

USER: Sure, I will wait for your response.

ASSISTANT: Thank you for waiting, I found a connecting flight 1013 of airline Spirit and fare is 100. Shall I proceed with booking?

USER: Yes, proceed with my booking.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you for your quick response.

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