You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to celebrate Christmas with my family at Houston, can you please reserve a ticket?

ASSISTANT: Sure, may I know your journey dates?

USER: My journey dates are from 12/24 to 12/26.

ASSISTANT: May I know your name?

USER: I am Katherine Perez.

ASSISTANT: Please provide your airport codes.

USER: My origin airport is Chicago, IL-ORD and destination is TX-HOU.

ASSISTANT: We are sorry to inform you that there is no flights found in your details.

USER: Ok, no issues.

ASSISTANT: Thanks for choosing us.

USER: Thanks for your quick response.