You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Kimberly Martin. I planned to meet my friend in IAH, can you please help me to book a flight ticket from DFW?

ASSISTANT: On which dates you are planning to travel?

USER: I prefer to travel on Dec 14 and Dec 16.

ASSISTANT: Do you have any other requirements?

USER: I would like to depart in afternoon in a connecting flight.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: Sorry Kimberly, there is no flights available.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Most welcome.