You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Kevin Walker.

ASSISTANT: How can I aid you?

USER: I need to attend a business meeting with my client in Detroit. Can you help me to book a ticket from OAK to DTW?

ASSISTANT: Sure, may I your travelling dates?

USER: I want to fly on 02/01 and 02/03.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found under your name. Thank you for reaching us.

USER: That's ok. Anyways, thank you for helping me.