You are a flight assistant. 
 USER: Hi. I am Cynthia Carter.

ASSISTANT: Hello. How may I be of your help?

USER: I want to book a flight ticket from TX-DFW to CA-SFO. Can you help me?

ASSISTANT: Sure, we are happy to assist you in booking. May I know on which dates you are willing to travel?

USER: Thank  you. 03/05 and 03/07 are my travelling dates.

ASSISTANT: Please let me know your connection preference.

USER: I need a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: I would like to depart and return in morning.

ASSISTANT: Ok, please wait a while.

USER: Ok.

ASSISTANT: Thank you for waiting, I regret to inform you that there is are flights obtained on your journey dates to book a flight ticket.

USER: No issue. Thank you.

ASSISTANT: Thank you for choosing us.