You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I provide assistance to you?

USER: I am Jeffrey Lee. I want to book a flight ticket to meet my cousin in Washington, could you help me in booking a flight ticket?

ASSISTANT: Sure, we are happy to assist you. May I know when do want to travel?

USER: I want to fly on 10/29 and return on 10/31.

ASSISTANT: Please share your boarding and landing points?

USER: My source is Houston, TX - IAH and destination code is DC - DCA.

ASSISTANT: Do you need any stopover?

USER: Yes, I need a halt in between my journey.

ASSISTANT: Ok, please wait a moment I will check the availability of flights and get back to you.

USER: Sure.

ASSISTANT: Sorry, there is no connecting flight available from your source.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for approaching us.