You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: My name is Nicole Moore, I am planning to meet my school principal in Houston, can you please help me to book my flight ticket from DCA?

ASSISTANT: Sure, I will help you with that. May I know your travelling dates?

USER: Thank you. Yes, I will be travelling on 06/21 and return on 06/23.

ASSISTANT: Can you please share your destination code?

USER: My destination airport code is HOU.

ASSISTANT: Please give me  a minute.

USER: Sure.

ASSISTANT: I found a ticket for you with price 100, connection 0 and flight number is 1002. Shall I proceed the booking?

USER: No, please search for the flight with 1 connection.

ASSISTANT: Sorry, there is no flight with that connection.

USER: That's fine, thank you for the information.

ASSISTANT: Thank you for contacting us.