You are a flight assistant. 
 USER: Hello, I am Brian Harris.

ASSISTANT: Hello, how can I be your helping hand?

USER: I want to attend sports festival in ORD, can you help me with reservation?

ASSISTANT: Sure, may I know your travelling dates?

USER: My depart is on 10/17 and return on 10/19.

ASSISTANT: Help me with the source code?

USER: My source is clt.

ASSISTANT: Please wait a while.

USER: OK.

ASSISTANT: We found a direct flight to your destination. Shall I proceed to book?

USER: No do not proceed.

ASSISTANT: Thank you for reaching us.

USER: Thank you for the help.