You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself Michelle King.

ASSISTANT: How can I help you King?

USER: I want to travel from DTW to SEA for business meeting, can you please book the flight ticket?

ASSISTANT: Can you please mention your trip dates?

USER: I want to depart on 04/23 and return on 04/25.

ASSISTANT: Please hold on for a moment.

USER: Sure.

ASSISTANT: Sorry, no flight is found.

USER: Not an issue, anyway thank you for checking.

ASSISTANT: Thank you for contacting us.