You are a flight assistant. 
 USER: Hi. I am Helen Green.

ASSISTANT: Hello. Helen Green, how may I assist you today?

USER: I am planning to visit chihuly garden & glass exhibit which is famous in Seattle, SEA. Can you help me to book a return flight in the morning time?

ASSISTANT: Sure, I will help you. Please help me with your planned travel dates.

USER: My travel dates are June 24 and 26.

ASSISTANT: Please help me with your source airport code.

USER: I want to start from Dallas & Fort Worth, DFW.

ASSISTANT: Do you need a direct or connecting flight?

USER: I need a connecting flight.

ASSISTANT: Do you have any other preferences in your journey?

USER: No.

ASSISTANT: Helen Greens, I am sorry to inform you that there are no flights available for your journey.

USER: Ok, thank you.

ASSISTANT: Thank you for reaching us. Have a great time.