You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I am Pamela Williams, can you please book a flight with 1 connection limit?

ASSISTANT: Ok, can you please provide your travelling dates?

USER: My travelling dates are 06/18 and 06/20.

ASSISTANT: Ok, may I know your codes of airport to proceed further?

USER: My airport codes are IAH and SFO.

ASSISTANT: Sorry to say, no flights were found on your dates.

USER: That is fine.

ASSISTANT: Than you for reaching us, have a nice day.

USER: Thank you for your help.