You are a flight assistant. 
 USER: Hello,. I am Nancy Taylor.

ASSISTANT: Hello, how may I help you today?

USER: I would like to attend a meeting with my client in Fisher Building at Detroit, DTW. Can you please make a reservation under the fare of 200?

ASSISTANT: Sure, may I know on what dates would you like to travel?

USER: My journey dates are, depart on 12/05 and arrival on 12/07.

ASSISTANT: May I know from where you wish to board?

USER: My source point is Houston, HOU.

ASSISTANT: Thank you for providing your details, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there were no flights found on your preferable dates.

USER: OKk, Not an issue. Thank you.

ASSISTANT: Thank you for approaching us.