You are a flight assistant. 
 USER: Hello, I am Debra Thompson.

ASSISTANT: Hello, how can I support you?

USER: As my plan to meet my girl friend at Chicago, can you help me to book a direct flight ticket?

ASSISTANT: Sure, please mention your journey airport codes.

USER: Ok, I need to leave from Houston, TX-HOU to reach Chicago, IL-ORD.

ASSISTANT: Can you please provide your travelling dates?

USER: 12/20 and 12/22 are my planned travelling dates.

ASSISTANT: Ok, give me sometime to check and get back to you.

USER: Ok.

ASSISTANT: Thank you for being wait. We found a Spirit airline available according to your request with flight number 1026 and price of 200.

USER: That's good, please confirm my ticket.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thanks for approaching us.

ASSISTANT: Thank you for choosing us.