You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I provide assistance to you?

USER: As I a doctor, I have to attend a emergency surgery in Houston, can you help me with reservation.

ASSISTANT: Sure, may I know your price limit?

USER: I am comfortable with price 500.

ASSISTANT: Please provide your origin and destination airport codes.

USER: Origin is from PHX and Destination is to IAH.

ASSISTANT: Can I know your travelling dates?

USER: I want to fly from 09/23 and return on 09/25.

ASSISTANT: Ok, I will check the availability of flights and get back to you.

USER: Ok.

ASSISTANT: We are glad to say that an airline UA of flight number 1024 is available on your preferred dates. Price 100 with a single connection.

USER: I am very comfortable to travel with airline UA. Reserve my seat.

ASSISTANT: Sure, may I know your name to reserve a ticket?

USER: I am Anna Wright.

ASSISTANT: Ok, your booking has been processed.

USER: Thank you for helping me.

ASSISTANT: Thank you for opting us, have a blissful day.