You are a flight assistant. 
 USER: Hello. I am Michelle Edwards.

ASSISTANT: Hello, how may I render you?

USER: Will you please reserve a seat to San Francisco, SFO?

ASSISTANT: Sure, may I know where would you fly out from?

USER: My source point is Las Vegas, LAS to do shopping at Pier 39.

ASSISTANT: How much fare are you expecting?

USER: I can afford an amount of 5000.

ASSISTANT: Please mention when are you planning to travel?

USER: I planned to travel on 01/19 to 01/21.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: There is an Spirit airline with flight number 1004 is available on your route and price is 100. Shall I proceed?

USER: Yes, you can reserve my seat.

ASSISTANT: Your booking has been processed.

USER: Thanks for your help.

ASSISTANT: Thank you for reaching us.