You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Jason Smith.

ASSISTANT: How can I aid you at this moment?

USER: I would like to travel on 12/07 from SFO, so can you help me to book a flight?

ASSISTANT: Sure, I will help you in booking flight ticket.

USER: Good to hear that from you.

ASSISTANT: Can you please let me know your destination airport code name?

USER: My preferred destination airport code is PHL.

ASSISTANT: Is there any return trip that your planning to SFO?

USER: Yes, I am planning to return to SFO on 12/09. So please book a return ticket for me.

ASSISTANT: Thank you for providing your travel details. I will put the conversation on hold to check the best flights available in your route. Based on your information, UA airline is ready to serve you with 1 connection with a minimum fare of 100 is available for you. Shall I proceed with this?

USER: Sure, take your time. Make sure that, my budget limit for this trip is 1000 only. Yes, proceed.

ASSISTANT: Your flight ticket is booked successfully, flight number is 1017.

USER: Thank you.

ASSISTANT: Thank you for reaching us, have a good day.