You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Pamela Walker.

ASSISTANT: How can I amend you today?

USER: I need a reservation to meet my project manager. Can you please book a ticket with a price limit of 1000?

ASSISTANT: Sure, I will help you. Please send the trip dates.

USER: I would like to leave between 12/19 and 12/21.

ASSISTANT: What are your boarding and destination codes?

USER: My airport codes are from PHX to IAH.

ASSISTANT: Please wait, I will let you know the information of flights.

USER: Ok.

ASSISTANT: We found a AA airline. 1003 flight number.

USER: Ok, please book this ticket.

ASSISTANT: I proceeded to book with a fare of 200.

USER: Thank you.

ASSISTANT: Thank you.