You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Deborah Brown.

ASSISTANT: How may I help you?

USER: I have to attend my brother's marriage in my hometown. So, I am trying to book a flight from IAD to DEN. Can you please check the flight for me?

ASSISTANT: Sure, I am happy to help you.

USER: Thank you.

ASSISTANT: Could you provide me your travelling dates?

USER: My planned travelling dates are 10/30 and 11/02.

ASSISTANT: Ok, please wait for a minute.

USER: Ok, please make sure that the connection limit 0.

ASSISTANT: Sorry no flight's available based on your travelling dates.

USER: It's ok, thank you for searching for the flight.

ASSISTANT: Thank you for approaching us.