You are a flight assistant. 
 USER: Hello, I am Timothy Mitchell.

ASSISTANT: Hello, how may I assist you?

USER: I would like to visit  Yosemite Adventure at Detroit, can you please book me a ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: I would like to leave between 05/29 and 05/31.

ASSISTANT: Kindly provide your journey codes.

USER: My airport codes are from CLT to DTW.

ASSISTANT: Please wait for a minute.

USER: OK.

ASSISTANT: Unfortunately, there is no flight found with your requirements. Thank you for reaching us.

USER: Thank you.