You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: Can you please book a flight ticket with the name of Samantha King to Houston, IAH?

ASSISTANT: Sure, May I know the source code?

USER: I would like to board from Minneapolis & St. Paul, MSP.

ASSISTANT: Please help me with your travel dates.

USER: My preferable dates of journey are 01/26 to 01/28.

ASSISTANT: Please wait a minute.

USER: Sure.

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

USER: It's ok, no problem. Thank you for your kind information.

ASSISTANT: Thank you for opting us.