You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I want to reserve my ticket from PHX to OAK to visit Oakland, can you please help me in booking?

ASSISTANT: Sure, I am glad to help you. May I know on what dates would you like to travel?

USER: Sure, my willing to travel dates are from Jun, 25 to Jun, 27.

ASSISTANT: May I know your name please?

USER: Sure, my name is Samantha Jones.

ASSISTANT: Do you have any connection limit?

USER: Yes, I want to fly in a connecting flight.

ASSISTANT: Do you have any specifications?

USER: Not required.

ASSISTANT: Sorry, there are no flights found on your travel dates.

USER: Ok, no problem. Anyways, thank you for your service.

ASSISTANT: Thank you for reaching us.