You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to attend share holders meeting. Can you help me for this booking/.

ASSISTANT: Can you share your trip source and destination?

USER: My nearest airport codes are DCA to DEN.

ASSISTANT: What are your trip dates?

USER: My planned travel dates are 09/22 and 09/24.

ASSISTANT: Do you need any connections?

USER: I want a flight with single connection.

ASSISTANT: Are there any other preferences?

USER: No more, thank you.

ASSISTANT: May I know your name?

USER: Jonathan Evans here.

ASSISTANT: Sorry, there is no flight found with your details.

USER: No issues, thank you for the information.

ASSISTANT: Thank you for reaching us.