You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I help you?

USER: I am Robert Gonzalez. I want to visit Pioneer Plaza at Dallas & Fort Worth with my husband. So, please help me for booking a ticket.

ASSISTANT: OK, please provide me your travelling dates?

USER: Sure, I want to travel to Pioneer plaza on 11/20 and return on 11/22.

ASSISTANT: Please share me your airport codes?

USER: I want to board from HOU and land to DFW.

ASSISTANT: OK, do you have any specifications?

USER: I want a flight within 5000 fare. I need a connecting flight.

ASSISTANT: Please wait for few minutes, let me check and revert you.

USER: Sure.

ASSISTANT: Thanks for waiting, sorry to inform you that there is no flight with your requirement.

USER: Ok, not a problem. Thank you for your information.

ASSISTANT: Thank you, for choosing us.