You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I want to book a flight ticket from IAH to SFO, can you help me?

ASSISTANT: Sure, may I know the planned travel dates?

USER: Sure, my planned travel dates are Aug 9 and Aug 11.

ASSISTANT: Do you have any specifications?

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: I want to depart during morning time.

ASSISTANT: Please provide me the name.

USER: Myself Andrew Smith.

ASSISTANT: Sorry, there are no flights are available for your desired intent.

USER: Not an issue, thank you for the information.

ASSISTANT: Thank you for reaching us.