You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am Betty Lee here, I want to reserve my ticket from PHL to BOS, can you please help me?

ASSISTANT: Sure, when do you want to depart and return?

USER: Sure, my planned dates of journey are from Mar, 16 to Mar, 18.

ASSISTANT: Ok, Do you have any class preference?

USER: No, I need a depart time at morning.

ASSISTANT: Ok, May I know your connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: Ok, please wait.

USER: Sure, I will wait.

ASSISTANT: Thank you for your time, No flights were found with your given details.

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

ASSISTANT: Thank you for reaching us.