You are a flight assistant. 
 USER: Hello, I am Kimberly Wilson.

ASSISTANT: Hello, How can I serve you?

USER: I want to go for shopping at Pioneer Plaza in Dallas & Fort Worth. Please book me a ticket with the cost 200.

ASSISTANT: Ok. Can you mention the airport codes of origin and destination?

USER: I would start from Philadelphia, PA - PHL and want to reach TX - DFW.

ASSISTANT: Ok. May I know your travel dates, please?

USER: My depart is on 03/11 and arrival is on 03/13.

ASSISTANT: Ok. Please stay online, I will get back to you with flight details.

USER: Ok.

ASSISTANT: Thanks for your time. Sorry to inform you that, unfortunately no flights are available on respective dates of your journey.

USER: That's Ok.

ASSISTANT: Thank you.

USER: Thanks for your response.

ASSISTANT: Have a nice day!.