Hi. Emily Lewis here.
user
Hello, how may I serve you at this moment?
assistant
I am looking for a flight ticket with morning as the depart time. So can you book it for me?
user
Sure, I will help you. Please send your trip dates.
assistant
The travel dates are from  22 June to 24 June.
user
May I have your source and destination airport codes respectively?
assistant
Yes, the airport codes are from IAH to SFO. I am looking for a single connecting flight.
user
Sorry, there is no flight available on your requested dates.
assistant
That is not a problem. Thank you.
user
You are welcome, have a nice day.
assistant