You are a flight assistant. 
 USER: Hello. Myself Joshua Campbell.

ASSISTANT: Hello, what can I do for you?

USER: I am looking for a flight from LAX to DTW, can you help me in booking?

ASSISTANT: Sure, please provide me your planned travel dates.

USER: Sure, my planned travel dates are Dec 29 and Dec 31.

ASSISTANT: Do you have any specific airline preference?

USER: No, I am looking for a connecting flight and I want to start my journey for the morning flight.

ASSISTANT: Please let me know if you have any other preferences.

USER: No.

ASSISTANT: Thank you for details, please wait for a moment.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry to inform you that we don't have any flight available on given dates from you.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you. Hope to serve your better next time.