You are a flight assistant. 
 USER: Hi. I am Emily Martinez.

ASSISTANT: Hello, How can I aid you?

USER: I want to book a flight ticket within 200. Can you help me?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: May I know your journey dates?

USER: June 23th and June 25th are my travelling dates.

ASSISTANT: Can you share me your airport codes?

USER: SFO and DFW are my airport codes.

ASSISTANT: In which class do you want to travel?

USER: I am comfortable with any class.

ASSISTANT: You have a flight 1025 in Delta airline and price 200 with a connection, Shall I proceed?

USER: You can reserve it.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you.