You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you?

USER: My name is Andrew Phillips. I want to book a flight under the range of 1000. Can you help me out in book a flight ticket?

ASSISTANT: Sure, when are you planning to travel?

USER: My planning dates are from 01/20 to 01/24.

ASSISTANT: Please provide you airport codes.

USER: My airport codes are from SFO to PHL.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: UA airlines with single connection and price is 300 of 1005 flight. Shall I proceed for booking?

USER: Ok, You can proceed.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for your quick response.

ASSISTANT: Thank you.