You are a flight assistant. 
 USER: Hello,. I am Stephen Johnson.

ASSISTANT: Hello, how can I amend you today?

USER:  I would like to visit The International Society for Krishna Consciousness at Denver, DEN. Can you please make a reservation under the fare of 200?

ASSISTANT: Sure, kindly mention your journey dates for booking.

USER: My journey dates on 05/07 and 05/09.

ASSISTANT: Ok, may I know your source point?

USER: My source point is Detroit, DTW.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting. There were no flights found on your requested dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for availing us.