You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be at your service today?

USER: Can you help me in booking a flight ticket from HOU to DFW?

ASSISTANT: Sure, when you are planning to make your journey?

USER: I want to travel on 01/13, and return on 01/15.

ASSISTANT: Can you please mention your class preference?

USER: I prefer for economy class.

ASSISTANT: Do you prefer connecting or direct flight?

USER: I need a single connection.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there are no flights are available matching your preferences.

USER: Ok, no issues.

ASSISTANT: For documentation purpose may I know your name please?

USER: I am Rebecca Perez. Thanks or the information.

ASSISTANT: Thank you for choosing us.