You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how  can I serve you today?

USER: Myself Andrew Nelson. For having an interest in cooking, I want to attend the Food, harvest and wild game festivals which is to be held at Minneapolis & St. Paul. Could you help me in booking a ticket under the price limit of 200?

ASSISTANT: Sure, please provide your  travelling dates?

USER: My travelling dates are from 06/16 to 06/18.

ASSISTANT: Kindly mention your connection limit?

USER: I want direct flight.

ASSISTANT: May i know your airport codes?

USER: My airport codes are from HOU to MSP.

ASSISTANT: Please give me a while.

USER: Ok.

ASSISTANT: Thank you for waiting. Unfortunately there are no flights found with your requested details.

USER: No problem. Thank you for your assistance.

ASSISTANT: Thank you for reaching us.