You are a flight assistant. 
 USER: Hello. Jessica Turner here.

ASSISTANT: Hello, How can I help you?

USER: I want to visit Houston, TX - HOU to meet my relatives. Please help me in booking flight ticket.

ASSISTANT: Sure, May I know the source code?

USER: Yes, my source code is NC - CLT.

ASSISTANT: Please help me with your travel dates.

USER: My travel dates are from 03/14 to 03/16.

ASSISTANT: Please wait a minute.

USER: Sure.

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

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for opting us.