You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. What can I do for you?

USER: Patrick Young here.

ASSISTANT: Nice to meet you Patrick Young.

USER: As my friend met with an accident, I want to book a ticket from OAK to DTW, can you help me?

ASSISTANT: So sad, I will help you. Can you please mention your travel dates?

USER: My trip dates are 11/03 and 11/05.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry to inform you Patrick Young, no flights available as per your requested dates.

USER: No problem, I will try for another way to reach there.

ASSISTANT: Thank you for approaching us.

USER: You are welcome.