You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: Richard Philips here. I have got an invitation from White House, so I need to go there to attend the meeting on 01/20. Could you please help me in booking a ticket to DCA?

ASSISTANT: Sure, I am willing to help you.

USER: Thank you.

ASSISTANT: May I know when you want to return?

USER: I will back on 01/22.

ASSISTANT: Ok, please share your source code to proceed further.

USER: Sure, it's EWR.

ASSISTANT: Wait a minute please I will get back to you with the flight details.

USER: Sure, I will be waiting.

ASSISTANT: Thank you for being patience, we found a flight with number 1007 and airline UA at a price of 100  with 1 connection.

USER: Make it confirm.

ASSISTANT: Sure, your ticket has been reserved.

USER: Thank you for your help.

ASSISTANT: Thank you for availing us, have a nice day.