You are a flight assistant. 
 USER: Hi, my name is Thomas walker.

ASSISTANT: Hello, what can I do for you?

USER: I need to book a flight ticket to Denver to enjoy beer festivals with my friends. Can you help me with a single connection?

ASSISTANT: Sure, may I know your airport codes?

USER: Sure, I need to depart from DFW to DEN.

ASSISTANT: When do you planned your journey dates?

USER: My planned dates are 10/28 and 10/30.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that there is no flight found on your journey dates.

USER: Ok, no worries at all. Thanks for your assistance.

ASSISTANT: Thanks for connecting us and have a nice day.