You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you today?

USER: I am Shirley Allen.

ASSISTANT: Ok.

USER: I want to fly from DEN to DFW to meet my friend, can you please help me to book a flight ticket?

ASSISTANT: Sure, we are here to help you. On which dates would you like me to book a flight ticket for you?

USER: Sure, the trip dates are 07/12 to 07/14.

ASSISTANT: Do you have any specifications?

USER: I need a halt. My price is 200.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

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

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for opting us.