You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you?

USER: My name is Matthew Garcia. I want to book a ticket to meet my friend in Detroit, will you help me with booking a ticket from PHL to DTW?

ASSISTANT: Matthew Garcia, can I know your travel dates for further booking?

USER: I would like to take off on 06/19 and return on 06/21.

ASSISTANT: Sorry, no flights were found on your requested dates. Thank you for reaching us.

USER: That's ok. Thank you for the information.

ASSISTANT: Have a nice day. Welcome.