You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I am Kenneth Clark. Can you book  a ticket from TX-DFW to NY-JFK?

ASSISTANT: Kindly mention your travelling dates please?

USER: My travel dates are 07/27 and 07/29.

ASSISTANT: May I know your budget for flight ticket?

USER:  My budget is 5000.

ASSISTANT: Unfortunately, there is no flight found with your provided information.

USER: Thank you for your response.

ASSISTANT: Thank you for approaching us.