You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Charles Phillips.

ASSISTANT: How may I assist you?

USER: Assist me in booking a flight ticket from Houston, IAH to reach Minneapolis, MSP. Can you help me with that?

ASSISTANT: Sure, I am happy to assist you.

USER: Thank you.

ASSISTANT: Please, let me know your depart date.

USER: I want to depart on 12/12.

ASSISTANT: When will you come back to Houston?

USER: I will be back to Houston, on 12/14.

ASSISTANT: Do you need a lay by in between your journey?

USER:  Yes, Usually I prefer a halt.

ASSISTANT: Thank you for sharing the details, hold on a minute.

USER: Sure, take your time.

ASSISTANT: Thank you for your time. Sorry to inform you that, there is no connecting flight available on your specified dates.

USER: That's ok, I will choose another alternative for my journey. Thanks for your kind information.

ASSISTANT: Thank you for contacting us.