You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am Matthew Roberts, want to travel from DFW to IAH. Can you please help you?

ASSISTANT: Sure, we are here to help to help you in booking.

USER: Thank you.

ASSISTANT: Please let me know your connection limit.

USER: I need a single connection.

ASSISTANT: Kindly share your planned travelling dates to proceed further.

USER: My travelling dates are from 03/20 to 03/22.

ASSISTANT: May I know if you prefer to have any other comforts in your journey?

USER: Yes, please check for normal cost preference.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

USER: That's fine, thank you for searching.

ASSISTANT: Thank you for choosing us.