You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Steven Phillips here.

ASSISTANT: How can I help you Steven?

USER: Actually, I am looking for a flight having single connection because my friend also booked the same flight that I want to travel, so can you please help me out with booking of a flight ticket from Oakland on 09/01?

ASSISTANT: Ok, please mention your airport codes.

USER: Sure, I will prefer OAK and PHL as my origin and destination airport codes respectively.

ASSISTANT: Ok, may I know your return date please?

USER: Sure, I would like to return on 09/03.

ASSISTANT: Ok, please wait for a moment.

USER: Sure, take your time.

ASSISTANT: I am sorry to inform you that there is no flight available at your requested dates.

USER: Oh! Sad to hear that. Anyway, I will find another alternative to go there. Thank you for the information.

ASSISTANT: You are welcome, have a great day.