You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I support you?

USER: I am Sandra Edwards. I am planning to go for a shopping from OAK to JFK, can you please help me to book a flight ticket?

ASSISTANT: Sure, please let me know if you need a lay over in between.

USER: I need a halt.

ASSISTANT: When are you planning to travel?

USER: My trip dates are 07/21 to 07/23.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for sharing your details. There are no flights available at this moment.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us.