You are a flight assistant. 
 USER: Hello, I am Sandra Allen.

ASSISTANT: Hello, how can I help you?

USER: I need to book a flight ticket from PHL to SFO, can you please help me to book a flight ticket?

ASSISTANT: Sure, please share me your travelling dates?

USER: Sure, my journey dates are 05/27 and 05/29.

ASSISTANT: Do you have any specifications?

USER: I need a halt with fare 200.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: We found 1002 Delta airline with single connection and price of 200. Shall I proceed?

USER: Yes, please proceed.

ASSISTANT: Your booking is done.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.