You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I best aid you today?

USER: I want to book a connected flight to New York, NY - JFK to go for a live concert. Can you please book a ticket on the name of Dorothy Robinson?

ASSISTANT: Sure, when do you planned your journey dates?

USER: My journey dates are 07/07 and 07/09.

ASSISTANT: What city you are traveling from?

USER: I want to start from Denver, CO - DEN.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry to say that, there is no flight found on your requested dates.

USER: Ok, no issues. Thank you.

ASSISTANT: Thanks for choosing us.