You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Dorothy Smith here.

ASSISTANT: How can I assist you today?

USER: Can you please help me in booking a ticket from SFO to HOU? as I have to attend a meeting over there.

ASSISTANT: Sure, when would you like to travel?

USER: I want to depart on 07/07 and return by 07/09.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no flights found under your preferable details.

USER: That's ok, thank you for your service.

ASSISTANT: Welcome, have a great day.