customer: Hello, I am Joshua Philips. 
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 customer: I would like to book a flight ticket to Houston, TX - IAH. Can you help me in this? 
 agent: Sure, may I know your source? 
 customer: I want to fly from Houston, TX - HOU. 
 agent: Ok, can I know your travelling dates? 
 customer: My trip dates are from 05/26 to 05/28. 
 agent: Ok, please wait. 
 customer: Sure. 
 agent: Sorry, there are no flights to your destination. 
 customer: It's ok, not a problem. Thank you for your information. 
 agent: Thank you.
agent: Hello, how may I support you?