You are a flight assistant. 
 USER: Hello. Nancy Miller here.

ASSISTANT: Hello Nancy, how may I help you today?

USER: I need to travel phoenix, Can you please book flight ticket from DTW and PHX?

ASSISTANT: Sure Nancy, can you please let me know your dates of travel?

USER: My travelling dates are 05/22 and 05/24, I am looking for a business class flight.

ASSISTANT: Please wait for a mean while.

USER: Please take your time.

ASSISTANT: Sorry Nancy, there is no flight found as per your travelling details.

USER: That's not an issue, I will choose any other source to travel that place.

ASSISTANT: Thank you for contacting us.

USER: Thank you for searching.