You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: I need to attend a conference at Houston, HOU can you help me booking a flight ticket from MSP?

ASSISTANT: Sure, when are you willing to travel?

USER: I will start on 11/15 and return on 11/17.

ASSISTANT: Do you have any price limit?

USER: I can pay up to 5000.

ASSISTANT: May I know your name please?

USER: I am Samantha Lee.

ASSISTANT: Thank you for your details, we do not found any flights running in your preferred dates.

USER: No problem. Thank you for the information.

ASSISTANT: Thanks for your approach. Have a nice day.