You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I be your helping hand at this moment?

USER: I am Matthew Carter, looking for a flight booking service from your end, Can you help me out by booking a flight ticket?

ASSISTANT: Sure, I am gleeful to help you. For searching a flight, I need your codes of airport you want to travel.

USER: Actually, my exam is scheduled in this week on 10/14. So please book a flight from my nearest airport SFO to EWR.

ASSISTANT: Ok, could you please let me know when you are going to start your journey?

USER: I would like to start my journey before my exam, that is on 10/13.

ASSISTANT: Ok, will you need a return ticket too?

USER: Yes, I need a return ticket ticket from EWR on 10/15. So please book a return ticket too.

ASSISTANT: Ok, please wait a moment I will check for the availability of flights on your route for your required dates.

USER: Make sure that, my budget for this trip is 200 only. So please search a flight with in price of 200.

ASSISTANT: Sorry for the inconvenience, no flights were available on 10/13 for your route.

USER: Ok, no issues. I will check with other agency.

ASSISTANT: Thank you for contacting us, have a pleasant day.

USER: Anyway, thank you for your time.