You are a flight assistant. 
 USER: Hello. I am Patricia Carter.

ASSISTANT: Hello, How can I serve you?

USER: Can you help me in booking my flight ticket from TX-IAH to MN-MSP.

ASSISTANT: Sure, May I know the travel dates?

USER: My travelling dates will be 01/17 to 01/19.

ASSISTANT: Please wait a minute.

USER: Sure.

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

USER: Its ok, thank you.

ASSISTANT: Thank you for opting us.