You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Please reserve a ticket with the name of Samuel Rodriguez.

ASSISTANT: Nice to meet you Samuel Rodriguez.

USER: Fine.

ASSISTANT: Kindly, mention your journey dates.

USER: On 05/20, I  would like to go Las Vegas to meet my children as they are staying at hostel. My return date is on 05/22.

ASSISTANT: Please, share your journey codes.

USER: I have to reach the Las Vegas, LAS by leaving the Boston, BOS.

ASSISTANT: Do you have any specifications?

USER: Price limit is to be 200.

ASSISTANT: We found a flight with fare of 300.

USER: Do not proceed.

ASSISTANT: Ok.

USER: Thank you for your assistance.

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