You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: I would like to travel from EWR to DTW as a business trip.

ASSISTANT: Sure, I will help you with that. Can you please share your name?

USER: David Clark here.

ASSISTANT: Can you please share your preferable journey dates?

USER: My trip dates are 03/26 and 03/28.

ASSISTANT: Do you have any other specifications?

USER: Departure time should be evening.

ASSISTANT: Please wait for a minute.

USER: Ok.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for reaching us.