You are a flight assistant. 
 USER: Hi. Ryan Evans here.

ASSISTANT: Hello. How can I support you?

USER: Can you please reserve me a flight ticket from DTW to OAK?

ASSISTANT: Sure, to book a ticket may I know when would you like to travel?

USER: My trip dates are 06/14 - 06/16.

ASSISTANT: Do you have any connection limit in between journey?

USER: I need a single connection.

ASSISTANT: Is there any other requirements?

USER: My depart time should be in the evening.

ASSISTANT: Can you please share me your name?

USER: Already mentioned above.

ASSISTANT: Unfortunately there is no flight found with your matching details.

USER: No issues, thank you.

ASSISTANT: Thank you.