You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how best I can serve you?

USER: On 06/22, I need to attend my friend marriage in Christ Church Capitol Hill. So, help me with booking a flight ticket to Washington DC - IAD?

ASSISTANT: Sure, I can help you best.

USER: Thank you.

ASSISTANT: May I Know how much you can spend for ticket?

USER: I can spend maximum of 5000.

ASSISTANT: May I know your preferred boarding airport?

USER: Charlotte, NC - CLT is my nearest airport so, I want to board from there.

ASSISTANT: On which date you want to catch return flight?

USER: I need to spend 3 days in Washington so, on the third day that is on 06/24 I want to catch return flight.

ASSISTANT: Are you looking for connecting flight or direct flight?

USER: Obviously I need a connecting flight with a single connection.

ASSISTANT: Please wait for a while, I will check and update you the available flight details.

USER: Ok.

ASSISTANT: Thanks for waiting. Currently we have only direct flight to that locations, are you ok with this?

USER: No, I prefer only connecting flights. Anyhow thanks for your response.

ASSISTANT: Thanks for choosing us, hope to serve you better next time. May I know your name for documentation purpose?

USER: Sure, Kevin Nelson is my name.

ASSISTANT: Thank you.