You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Sandra Martinez here.

ASSISTANT: How may I assist you?

USER: I want to reserve my ticket to visit Charlotte, can you please help me to book a ticket from PHX to CLT?

ASSISTANT: Can I know your travel dates?

USER: Sure, my preferable dates of journey is from 06/30 to 07/02. Please make sure that the price should not exceed the cost of 200.

ASSISTANT: There is a flight with flight number 1028 with number of connections 1, can I proceed booking?

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

ASSISTANT: Your booking is done in UA airlines.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.