You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Betty Campbell.

ASSISTANT: How can I assist you today?

USER: Can you please book a flight ticket for me from EWR to DTW?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: Thank you and my trip dates are on 11/29 and back on 12/01.

ASSISTANT: Please give me a moment.

USER: Sure, take your time.

ASSISTANT: Thanks for waiting, there is no flights available under your preferable details.

USER: Thank you for your information.

ASSISTANT: Welcome, have a great day.