You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Jacob Adams here, I want to book a flight to IAD from SEA to attend a wedding, can you help me?

ASSISTANT: Sure, may I know your travel dates?

USER: My journey dates will be from 11/21 to 11/23.

ASSISTANT: Do you have any specification?

USER: I need a flight within 500 with 1 connection.

ASSISTANT: There is no flight on your details.

USER: Oh! That's sad, thank you for checking.

ASSISTANT: Thank you.

USER: You are welcome.