You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you today?

USER: Andrew Garcia here. I have a Swimming competition in Oakland.Can you please help me for booking a ticket?

ASSISTANT: Sure, may I know your nearest airport codes for booking?

USER: My airport codes are from TX-IAH to CA-OAK.

ASSISTANT: Could you please help me with your travelling dates?

USER: My departure date is 12/23 and return date is 12/25. Make sure my price limit is 500. My connections limit is 1.

ASSISTANT: Ok, based on your details flight number 1017 from UA airlines is perfectly matches with your request. Shall I proceed with it?

USER: Please proceed for booking.

ASSISTANT: Ok, your ticket is successfully booked.

USER: Thank you for helping me.

ASSISTANT: Thank you for using our services, have a great journey.