You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jack Thompson.

ASSISTANT: Jack Thompson, how may I help you?

USER: Can you please book a flight ticket from HOU to DFW?

ASSISTANT: Sure, please provide your itinerary dates.

USER: I would like to travel from July 9 and need to return on July 11.

ASSISTANT: Do you have any specifications?

USER: Yes, I need connecting flight with economy class.

ASSISTANT: Sorry, no flights are available on your planned dates.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for contacting us.