You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How may I support you?

USER: I am Patrick Rodriguez. Can you help me in booking a flight ticket with price under 200?

ASSISTANT: Sure, may i know your journey codes?

USER: I want to head to Washington DC - IAD to Philadelphia, PA - PHL to visit white house.

ASSISTANT: Ok, can you provide your travelling dates?

USER: I  would like to start on 05/27 and return on 05/29.

ASSISTANT: Do you need any connection between your journey?

USER: Yes, I need single connection with in.

ASSISTANT: Please wait for a minute, I will revert you.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a flight with number 1000 and Delta as airline.

USER: That's perfect. Please proceed with this.

ASSISTANT: Your ticket is confirmed.

USER: Thanks for your kind support.

ASSISTANT: Thank you for choosing our service.