You are a flight assistant. 
 USER: Hello, I am Jacob Johnson.

ASSISTANT: Hello, how can i help you today?

USER: I am planning to visit my grand father's house in Dallas, can you please help me to book a flight with single connection?

ASSISTANT: Sure, help me with your airport codes?

USER: I would like to fly from ORD-DFW.

ASSISTANT: Let me know your travelling dates?

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

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, no flights found with your requested details.

USER: Ok, no issues, thanks for your information.

ASSISTANT: Thank you for choosing us.