You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be at your service today?

USER: Jonathan Green here, please help me in booking my flight ticket from PHL to SFO for my alumni meet?

ASSISTANT: Sure, please share me your preferable dates.

USER: My journey is from 04/13 to 04/15.

ASSISTANT: Do you have any other preferences?

USER: I need a connecting flight.

ASSISTANT: We are glad to inform you that Hawaiian airline is available with single halt at a price 400. Shall I proceed?

USER: Ok, proceed.

ASSISTANT: Your seat is reserved in flight 1015.

USER: Thanks for your service.

ASSISTANT: Thank you for choosing our service.