You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am Deborah Campbell. Please help me in booking a flight ticket on 06/15 to go for death valley adventure.

ASSISTANT: Sure, help me with your travel points?

USER: Source point is Detroit, DTW and destination is Washington, IAD.

ASSISTANT: May I know your return date?

USER: I will return on 06/17.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT:  sorry, no flights are working on your travel dates.

USER: Ok, no problem. Thank you.

ASSISTANT:  Thank you for opting us.