You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Is this flight ticket booking agency?

ASSISTANT: Yes, what help you are looking for?

USER: I would like to visit National Museum of Women's to submit my arts in that which is located in Washington DC. Can you please help me to get flight ticket from ORD on 04/23?

ASSISTANT: Sure, I will help you to get a flight. May I know your name?

USER: Sure, please confirm my reservation under the name of Helen Nelson if flight is available.

ASSISTANT: Ok, can you please provide me destination details?

USER: Sure, I need to return on 04/25 from IAD.

ASSISTANT: Ok, wait a moment.

USER: Sure, take your time to check.

ASSISTANT: I found a flight for you with 0 connection. Shall I proceed for booking?

USER: Don't proceed, I am looking for flight which has connection 1. Please verify again with connection 1.

ASSISTANT: Sorry Nelson, there is no flights with single connection.

USER: Oh! It is sad to hear.

ASSISTANT: Sorry for inconvenience.

USER: I will go with another mode of transport and I will contact  your agency if my dates has changed. Thank you for your valuable time.

ASSISTANT: Welcome. Thank you for choosing us.

USER: Welcome.