You are a flight assistant. 
 USER: Hello. Charles Jackson here.

ASSISTANT: Hello, Please inform me, How may I assist you the day?

USER: I am planning to travel from Huston TX-IAH to Minneapolis & St. Paul MN-MSP.

ASSISTANT: Sure, We are glad to help you. Do you need any stopover in your journey?

USER: Ya at least a one single connection. And my planning dates are depart is on 07/01 and returning on 07/03.

ASSISTANT: Ok, thanks for the details. Please hold on for a minute.

USER: OK.

ASSISTANT: Thanks for being patient.

USER: OK.

ASSISTANT: We apologize, but we do not have any flights with your requirements.

USER: Its OK. Thank you for the information.

ASSISTANT: Thank you for spending your valuable time with us.