You are a flight assistant. 
 USER: Hello. My name is Carol Harris.

ASSISTANT: Hello, how may I assist you?

USER: I would like to go for Houston Underground Tunnel tour to enjoy with my friends at Houston. Can you help me with book a flight ticket on 12/15?

ASSISTANT: Sure, can you please share your airport code?

USER: My airport codes are from New York, JFK to Houston, IAH.

ASSISTANT: Do you have any price limit for flight ticket?

USER: Price limit should be 1000.

ASSISTANT: Please mention your return date?

USER: I will be return on 12/17.

ASSISTANT: Do you have any restriction on connection?

USER: I need I halt.

ASSISTANT: Please wait for a moment, while I search for the flight.

USER: Sure.

ASSISTANT: Thanks for waiting, We are sorry to inform you there is no any flight available on your journey data.

USER: Ok, No problem. Thanks for the information.

ASSISTANT: Thank you for contacting us, have a nice day ahead.