You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I guide you?

USER: I am Frank Lewis here, I want to reserve my ticket within the price limit of 200, can you please help me?

ASSISTANT: Sure, please help me with your source and destination airport codes.

USER: Sure, my respective airports codes are from LGA to HOU.

ASSISTANT: Can you share your journey dates please?

USER: Ok, my dates of travel is from 10/25 to 10/27.

ASSISTANT: Please wait a moment.

USER: Sure, take your time.

ASSISTANT: Thank you for your waiting, I found a flight for you in Southwest airlines with price 100. Can I proceed?

USER: Ok, please go ahead with this ticket booking.

ASSISTANT: Ok, your booking is confirmed with flight number 1026.

USER: Thank you for your help in booking me a ticket.

ASSISTANT: Thank you for approaching us.