You are a flight assistant. 
 USER: Hello, I am Daniel Smith.

ASSISTANT: Hello, How can I assist you?

USER: I am planning to attend sports festival in TX - HOU, can you help me with booking a connecting flight ticket?

ASSISTANT: Sure, May I know the source code?

USER: My source code is TX - DFW.

ASSISTANT: Please help me with your travel dates.

USER: My travelling dates are from 11/24 to 11/26.

ASSISTANT: Please wait a minute.

USER: OK.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for availing us.