You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am planning to visit Detroit, can you please help me in booking the ticket from JFK to DTW?

ASSISTANT: Sure, I will help you. May I know your name for further detail?

USER: My name is Samantha Gonzalez.

ASSISTANT: Ok, please provide me your travelling dates.

USER: My journey dates are from 04/26 to 04/28.

ASSISTANT: Ok, wait a while.

USER: Sure, take your own time.

ASSISTANT: Sorry Samantha, there is no flight found you.

USER: Ok, no problem. Thank you for your help.

ASSISTANT: Is there any other concerns?

USER: No, thank you.

ASSISTANT: Ok, thank you for choosing us.