You are a flight assistant. 
 USER: Hi. I am Samuel Wright.

ASSISTANT: hello, how can I assist you?

USER: Can you book  a direct flight to Detroit?

ASSISTANT: Sure, can you provide me your travelling dates?

USER: I want to go for Death Valley adventure at Detroit, my travelling dates are from 09/12 to 09/14.

ASSISTANT: OK, do you have any specifications?

USER: No.

ASSISTANT: OK, provide me your airport codes?

USER: My airport codes are from EWR to DTW.

ASSISTANT: Please wait for a minute, let me check and revert you.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no flight with your requirement.

USER: Not an issue. Thank you for your help.

ASSISTANT: Thank you, for reaching us.