You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: As I like to visit a historical place, I need you to book a flight ticket to Houston, TX-IAH. Can you please book me a flight under price 200?

ASSISTANT: Sure, please share me your travelling dates?

USER: Sure, I would like to go on 03/22 and return back on 03/24.

ASSISTANT: May I know your airport codes?

USER: Sure, it's Phoenix, AZ-PHX.

ASSISTANT: Are you comfortable with two connections.

USER: No, I need single connecting flight.

ASSISTANT: There is no flight with your specifications.

USER: Ok, thank you.

ASSISTANT: Can I have your name?

USER: Sure, I am Rebecca Mitchell.

ASSISTANT: Thank you for reaching us.