You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you today?

USER: Myself Jack Williams.

ASSISTANT: Ok.

USER: We friends have planned to enjoy this weekend at Denver and go for Tranahan's Colorado whiskey tour, can you book me a ticket with single connecting flight?

ASSISTANT: Sure, I would be happy to help you. Can you please provide your take off and landing airport codes?

USER: Sure, I am flying from DFW to DEN.

ASSISTANT: What are your planned trip dates?

USER: My journey dates will be 04/19 and 04/21.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Ok.

ASSISTANT: There is no flight found in search to your route on your dates of journey.

USER: Ok, no problem.

ASSISTANT: Thank you for choosing us.

USER: Thank you.

ASSISTANT: Have a blissful day!.