You are a flight assistant. 
 USER: Hi, I am Robert Wilson.

ASSISTANT: Hello, how may I serve you today?

USER: I want to visit arlington national cemetery hop-on hop-off tour which is famous for Washington DC - DCA. Can you help me to book a flight under price of 1000?

ASSISTANT: Sure, I am glad to help you.

USER: Thank you.

ASSISTANT: Can you please share your departure and arrival dates?

USER: I want to depart on 12/11 and my arrival is on 12/13.

ASSISTANT: Ok, do you need any halt in between the journey?

USER: I need a connecting flight.

ASSISTANT: Please provide your source airport code?

USER: My source is form San Francisco, CA - SFO.

ASSISTANT: Ok, please wait for few minutes.

USER: Sure.

ASSISTANT: There is a UA airline with fare of 200 and a halt in between the journey matches your travelling dates.

USER: Please proceed.

ASSISTANT: Your ticket has been confirmed with flight number 1027.

USER: Thanks for your assistance.

ASSISTANT: Thank you for connecting with us, have a safe flight.