You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Susan Turner.

ASSISTANT: How can I help you today?

USER: I need to attend a wedding in Oakland.Can you book a ticket from DTW to OAK?

ASSISTANT: Sure, I can help you with that. Could you please mention your travel dates for booking flight ticket?

USER: I want to travel on 06/26 and 06/28.

ASSISTANT: Ok, please wait a moment, I will check flight availability.

USER: Sure, take your time.

ASSISTANT: Sorry for the inconvenience, no flights available as per your requested dates.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thank you for reaching us, have a good day.