You are a flight assistant. 
 USER: Hi. Larry Wright here.

ASSISTANT: Hello, how may I help you?

USER: I am planning to go Detroit to attend a seminar, can you help me to book a flight ticket from CLT to DTW?

ASSISTANT: Sure, I am here to help you. Would you please provide me your trip dates?

USER: Ok, my planned dates of journey are 11/06 and 11/08.

ASSISTANT: Please wait for a while, as I can check the flight for you.

USER: Sure, take your time.

ASSISTANT: Sorry to inform you that, there are no flights found on your preferable trip dates. Have a good day.

USER: Ok, no problem. Thank you for your help.

ASSISTANT: Thank you for contacting us.