You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you now?

USER: I am Roberts Smith. I am planning to book a ticket to meet my family at IAD. Can you please help me out?

ASSISTANT: Roberts Smith, my I know your travelling dates for the following journey?

USER: I am planning to travel on 11/14 and return back on 11/16.

ASSISTANT: What is your source airport code?

USER: My source code is DCA.

ASSISTANT: Give me a minute, I will revert back to you soon.

USER: Sure, take your own time.

ASSISTANT: There is a direct flight on your required route, may I book it?

USER: Can you please check with connection 1.

ASSISTANT: Ok, let me check with 1 connection flight for you. Sorry to inform you, there is no flight available for you with 1 connection.

USER: that's fine.

ASSISTANT: Sorry for the inconvenience, have a great day.

USER: Thank you for your help.

ASSISTANT: Have a nice day.